39204945 has 64 divisors (see below), whose sum is σ = 76204800. Its totient is φ = 19008000.

The previous prime is 39204937. The next prime is 39204947. The reversal of 39204945 is 54940293.

It is not a de Polignac number, because 39204945 - 2³ = 39204937 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39204947) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 156070 + ... + 156320.

It is an arithmetic number, because the mean of its divisors is an integer number (1190700).

Almost surely, 2^39204945 is an apocalyptic number.

It is an amenable number.

39204945 is a deficient number, since it is larger than the sum of its proper divisors (36999855).

39204945 is a wasteful number, since it uses less digits than its factorization.

39204945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 39204945 is about 6261.3852301228. The cubic root of 39204945 is about 339.7141339954.

The spelling of 39204945 in words is "thirty-nine million, two hundred four thousand, nine hundred forty-five".