39997248 has 28 divisors (see below), whose sum is σ = 105826560. Its totient is φ = 13332352.

The previous prime is 39997247. The next prime is 39997249. The reversal of 39997248 is 84279993.

It is an interprime number because it is at equal distance from previous prime (39997247) and next prime (39997249).

It is a self number, because there is not a number n which added to its sum of digits gives 39997248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39997241) 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, 103968 + ... + 104351.

It is an arithmetic number, because the mean of its divisors is an integer number (3779520).

Almost surely, 2^39997248 is an apocalyptic number.

It is an amenable number.

39997248 is an abundant number, since it is smaller than the sum of its proper divisors (65829312).

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

39997248 is a wasteful number, since it uses less digits than its factorization.

39997248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208334 (or 208324 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 39997248 is about 6324.3377518915. The cubic root of 39997248 is about 341.9873460658.

The spelling of 39997248 in words is "thirty-nine million, nine hundred ninety-seven thousand, two hundred forty-eight".