39004157 has 4 divisors (see below), whose sum is σ = 39026460. Its totient is φ = 38981856.

The previous prime is 39004153. The next prime is 39004187. The reversal of 39004157 is 75140093.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35832196 + 3171961 = 5986^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 39004157 - 2² = 39004153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39004151) 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, 8282 + ... + 12107.

It is an arithmetic number, because the mean of its divisors is an integer number (9756615).

Almost surely, 2^39004157 is an apocalyptic number.

It is an amenable number.

39004157 is a deficient number, since it is larger than the sum of its proper divisors (22303).

39004157 is a wasteful number, since it uses less digits than its factorization.

39004157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22302.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 39004157 is about 6245.3308158976. The cubic root of 39004157 is about 339.1331928186.

The spelling of 39004157 in words is "thirty-nine million, four thousand, one hundred fifty-seven".