39487140 has 324 divisors, whose sum is σ = 157290588. Its totient is φ = 7983360.

The previous prime is 39487117. The next prime is 39487163. The reversal of 39487140 is 4178493.

It is a happy number.

39487140 is a `hidden beast` number, since 39 + 487 + 140 = 666.

It is an interprime number because it is at equal distance from previous prime (39487117) and next prime (39487163).

It can be written as a sum of positive squares in 2 ways, for example, as 25826724 + 13660416 = 5082^2 + 3696^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 39487095 and 39487104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 1067202 + ... + 1067238.

Almost surely, 2^39487140 is an apocalyptic number.

39487140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39487140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78645294).

39487140 is an abundant number, since it is smaller than the sum of its proper divisors (117803448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39487140 is a wasteful number, since it uses less digits than its factorization.

39487140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 39487140 is about 6283.8793750358. The cubic root of 39487140 is about 340.5272672504.

The spelling of 39487140 in words is "thirty-nine million, four hundred eighty-seven thousand, one hundred forty".