39690365 has 16 divisors (see below), whose sum is σ = 55956096. Its totient is φ = 26644800.

The previous prime is 39690347. The next prime is 39690367. The reversal of 39690365 is 56309693.

It is a de Polignac number, because none of the positive numbers 2^k-39690365 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39690367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27041 + ... + 28470.

It is an arithmetic number, because the mean of its divisors is an integer number (3497256).

Almost surely, 2^39690365 is an apocalyptic number.

It is an amenable number.

39690365 is a deficient number, since it is larger than the sum of its proper divisors (16265731).

39690365 is a wasteful number, since it uses less digits than its factorization.

39690365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55540.

The product of its (nonzero) digits is 131220, while the sum is 41.

The square root of 39690365 is about 6300.0289681874. The cubic root of 39690365 is about 341.1104551838.

The spelling of 39690365 in words is "thirty-nine million, six hundred ninety thousand, three hundred sixty-five".