3698664839 has 4 divisors (see below), whose sum is σ = 3817976640. Its totient is φ = 3579353040.

The previous prime is 3698664833. The next prime is 3698664847. The reversal of 3698664839 is 9384668963.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3698664839 - 2²⁴ = 3681887623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3698664833) 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 3 ways as a sum of consecutive naturals, for example, 59655854 + ... + 59655915.

It is an arithmetic number, because the mean of its divisors is an integer number (954494160).

Almost surely, 2^3698664839 is an apocalyptic number.

3698664839 is a deficient number, since it is larger than the sum of its proper divisors (119311801).

3698664839 is a wasteful number, since it uses less digits than its factorization.

3698664839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119311800.

The product of its digits is 40310784, while the sum is 62.

The square root of 3698664839 is about 60816.6493568990. The cubic root of 3698664839 is about 1546.4943092891.

The spelling of 3698664839 in words is "three billion, six hundred ninety-eight million, six hundred sixty-four thousand, eight hundred thirty-nine".