39895040 has 60 divisors (see below), whose sum is σ = 95941776. Its totient is φ = 15925248.

The previous prime is 39895027. The next prime is 39895043. The reversal of 39895040 is 4059893.

It is a super-2 number, since 2×39895040² = 3183228433203200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 39894985 and 39895003.

It is not an unprimeable number, because it can be changed into a prime (39895043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81677 + ... + 82163.

Almost surely, 2^39895040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39895040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47970888).

39895040 is an abundant number, since it is smaller than the sum of its proper divisors (56046736).

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

39895040 is an frugal number, since it uses more digits than its factorization.

39895040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 39895040 is about 6316.2520532354. The cubic root of 39895040 is about 341.6957955204.

The spelling of 39895040 in words is "thirty-nine million, eight hundred ninety-five thousand, forty".