39690157 has 12 divisors (see below), whose sum is σ = 44851104. Its totient is φ = 35040720.

The previous prime is 39690151. The next prime is 39690187. The reversal of 39690157 is 75109693.

It is not a de Polignac number, because 39690157 - 2¹¹ = 39688109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39690151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1219 + ... + 8992.

It is an arithmetic number, because the mean of its divisors is an integer number (3737592).

Almost surely, 2^39690157 is an apocalyptic number.

It is an amenable number.

39690157 is a deficient number, since it is larger than the sum of its proper divisors (5160947).

39690157 is a wasteful number, since it uses less digits than its factorization.

39690157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260 (or 10247 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 39690157 is about 6300.0124603051. The cubic root of 39690157 is about 341.1098593121.

The spelling of 39690157 in words is "thirty-nine million, six hundred ninety thousand, one hundred fifty-seven".