39994925 has 12 divisors (see below), whose sum is σ = 49738260. Its totient is φ = 31902720.

The previous prime is 39994919. The next prime is 39994949. The reversal of 39994925 is 52949993.

It can be written as a sum of positive squares in 6 ways, for example, as 894916 + 39100009 = 946^2 + 6253^2 .

It is not a de Polignac number, because 39994925 - 2¹² = 39990829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7181 + ... + 11469.

It is an arithmetic number, because the mean of its divisors is an integer number (4144855).

Almost surely, 2^39994925 is an apocalyptic number.

It is an amenable number.

39994925 is a deficient number, since it is larger than the sum of its proper divisors (9743335).

39994925 is a wasteful number, since it uses less digits than its factorization.

39994925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672 (or 4667 counting only the distinct ones).

The product of its digits is 787320, while the sum is 50.

The square root of 39994925 is about 6324.1540936318. The cubic root of 39994925 is about 341.9807251771.

The spelling of 39994925 in words is "thirty-nine million, nine hundred ninety-four thousand, nine hundred twenty-five".