39690771 has 8 divisors (see below), whose sum is σ = 52991424. Its totient is φ = 26425320.

The previous prime is 39690737. The next prime is 39690779. The reversal of 39690771 is 17709693.

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

It is not a de Polignac number, because 39690771 - 2¹⁴ = 39674387 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (39690779) 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, 6045 + ... + 10766.

It is an arithmetic number, because the mean of its divisors is an integer number (6623928).

Almost surely, 2^39690771 is an apocalyptic number.

39690771 is a deficient number, since it is larger than the sum of its proper divisors (13300653).

39690771 is a wasteful number, since it uses less digits than its factorization.

39690771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17601.

The product of its (nonzero) digits is 71442, while the sum is 42.

The square root of 39690771 is about 6300.0611901790. The cubic root of 39690771 is about 341.1116182736. Note that the first 3 decimals are identical.

The spelling of 39690771 in words is "thirty-nine million, six hundred ninety thousand, seven hundred seventy-one".