39696491 has 8 divisors (see below), whose sum is σ = 41870400. Its totient is φ = 37531080.

The previous prime is 39696469. The next prime is 39696521. The reversal of 39696491 is 19469693.

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

It is not a de Polignac number, because 39696491 - 2¹⁴ = 39680107 is a prime.

It is a super-2 number, since 2×39696491² = 3151622795426162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39696691) 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, 9020 + ... + 12678.

It is an arithmetic number, because the mean of its divisors is an integer number (5233800).

Almost surely, 2^39696491 is an apocalyptic number.

39696491 is a deficient number, since it is larger than the sum of its proper divisors (2173909).

39696491 is a wasteful number, since it uses less digits than its factorization.

39696491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249.

The product of its digits is 314928, while the sum is 47.

The square root of 39696491 is about 6300.5151376693. The cubic root of 39696491 is about 341.1280038185.

The spelling of 39696491 in words is "thirty-nine million, six hundred ninety-six thousand, four hundred ninety-one".