39690617 has 8 divisors (see below), whose sum is σ = 41524800. Its totient is φ = 37865520.

The previous prime is 39690593. The next prime is 39690667. The reversal of 39690617 is 71609693.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39690617 - 2¹⁶ = 39625081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39690667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7634 + ... + 11732.

It is an arithmetic number, because the mean of its divisors is an integer number (5190600).

Almost surely, 2^39690617 is an apocalyptic number.

It is an amenable number.

39690617 is a deficient number, since it is larger than the sum of its proper divisors (1834183).

39690617 is a wasteful number, since it uses less digits than its factorization.

39690617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4543.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 39690617 is about 6300.0489680637. The cubic root of 39690617 is about 341.1111771026. Note that the first 4 decimals are identical.

The spelling of 39690617 in words is "thirty-nine million, six hundred ninety thousand, six hundred seventeen".