39964925 has 48 divisors (see below), whose sum is σ = 66579072. Its totient is φ = 22982400.

The previous prime is 39964919. The next prime is 39964949. The reversal of 39964925 is 52946993.

It is not a de Polignac number, because 39964925 - 2¹⁰ = 39963901 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 39964925.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24227 + ... + 25823.

It is an arithmetic number, because the mean of its divisors is an integer number (1387064).

Almost surely, 2^39964925 is an apocalyptic number.

39964925 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39964925 is a deficient number, since it is larger than the sum of its proper divisors (26614147).

39964925 is a wasteful number, since it uses less digits than its factorization.

39964925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 1633 counting only the distinct ones).

The product of its digits is 524880, while the sum is 47.

The square root of 39964925 is about 6321.7817899703. The cubic root of 39964925 is about 341.8951977591.

The spelling of 39964925 in words is "thirty-nine million, nine hundred sixty-four thousand, nine hundred twenty-five".