389290737394 has 32 divisors (see below), whose sum is σ = 644437540656. Its totient is φ = 175223623680.

The previous prime is 389290737391. The next prime is 389290737403. The reversal of 389290737394 is 493737092983.

It can be written as a sum of positive squares in 8 ways, for example, as 41621304169 + 347669433225 = 204013^2 + 589635^2 .

It is a super-2 number, since 2×389290737394² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (389290737391) 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, 2785474 + ... + 2921890.

Almost surely, 2^389290737394 is an apocalyptic number.

389290737394 is a deficient number, since it is larger than the sum of its proper divisors (255146803262).

389290737394 is a wasteful number, since it uses less digits than its factorization.

389290737394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139150.

The product of its (nonzero) digits is 61725888, while the sum is 64.

The spelling of 389290737394 in words is "three hundred eighty-nine billion, two hundred ninety million, seven hundred thirty-seven thousand, three hundred ninety-four".