39997265 has 16 divisors (see below), whose sum is σ = 59840640. Its totient is φ = 24933120.

The previous prime is 39997249. The next prime is 39997289. The reversal of 39997265 is 56279993.

It is not a de Polignac number, because 39997265 - 2⁴ = 39997249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51560 + ... + 52329.

It is an arithmetic number, because the mean of its divisors is an integer number (3740040).

Almost surely, 2^39997265 is an apocalyptic number.

39997265 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39997265 is a deficient number, since it is larger than the sum of its proper divisors (19843375).

39997265 is a wasteful number, since it uses less digits than its factorization.

39997265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103912.

The product of its digits is 918540, while the sum is 50.

The square root of 39997265 is about 6324.3390959056. The cubic root of 39997265 is about 341.9873945173.

The spelling of 39997265 in words is "thirty-nine million, nine hundred ninety-seven thousand, two hundred sixty-five".