39890496 has 28 divisors (see below), whose sum is σ = 105544112. Its totient is φ = 13296768.

The previous prime is 39890491. The next prime is 39890509. The reversal of 39890496 is 69409893.

It is a happy number.

It is a super-2 number, since 2×39890496² = 3182503342252032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (39890491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103690 + ... + 104073.

Almost surely, 2^39890496 is an apocalyptic number.

It is an amenable number.

39890496 is an abundant number, since it is smaller than the sum of its proper divisors (65653616).

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

39890496 is a wasteful number, since it uses less digits than its factorization.

39890496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207778 (or 207768 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 39890496 is about 6315.8923360045. The cubic root of 39890496 is about 341.6828221061.

The spelling of 39890496 in words is "thirty-nine million, eight hundred ninety thousand, four hundred ninety-six".