389666494 has 16 divisors (see below), whose sum is σ = 680604768. Its totient is φ = 163848672.

The previous prime is 389666489. The next prime is 389666513. The reversal of 389666494 is 494666983.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261837 + ... + 263320.

It is an arithmetic number, because the mean of its divisors is an integer number (42537798).

Almost surely, 2^389666494 is an apocalyptic number.

389666494 is a deficient number, since it is larger than the sum of its proper divisors (290938274).

389666494 is a wasteful number, since it uses less digits than its factorization.

389666494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525219.

The product of its digits is 6718464, while the sum is 55.

The square root of 389666494 is about 19739.9719857957. The cubic root of 389666494 is about 730.4060379525.

The spelling of 389666494 in words is "three hundred eighty-nine million, six hundred sixty-six thousand, four hundred ninety-four".