389499994 has 16 divisors (see below), whose sum is σ = 629836200. Its totient is φ = 179585280.

The previous prime is 389499991. The next prime is 389500003. The reversal of 389499994 is 499994983.

It can be written as a sum of positive squares in 4 ways, for example, as 213539769 + 175960225 = 14613^2 + 13265^2 .

It is not an unprimeable number, because it can be changed into a prime (389499991) 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, 20134 + ... + 34414.

Almost surely, 2^389499994 is an apocalyptic number.

389499994 is a deficient number, since it is larger than the sum of its proper divisors (240336206).

389499994 is a wasteful number, since it uses less digits than its factorization.

389499994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15345.

The product of its digits is 22674816, while the sum is 64.

The square root of 389499994 is about 19735.7542039822. The cubic root of 389499994 is about 730.3019917724.

The spelling of 389499994 in words is "three hundred eighty-nine million, four hundred ninety-nine thousand, nine hundred ninety-four".