39884940 has 96 divisors (see below), whose sum is σ = 125012160. Its totient is φ = 10556928.

The previous prime is 39884939. The next prime is 39884963. The reversal of 39884940 is 4948893.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125662 + ... + 125978.

It is an arithmetic number, because the mean of its divisors is an integer number (1302210).

Almost surely, 2^39884940 is an apocalyptic number.

39884940 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 39884940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62506080).

39884940 is an abundant number, since it is smaller than the sum of its proper divisors (85127220).

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

39884940 is a wasteful number, since it uses less digits than its factorization.

39884940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 39884940 is about 6315.4524778514. The cubic root of 39884940 is about 341.6669580274. Note that the first 3 decimals are identical.

The spelling of 39884940 in words is "thirty-nine million, eight hundred eighty-four thousand, nine hundred forty".