389354690 has 8 divisors (see below), whose sum is σ = 700838460. Its totient is φ = 155741872.

The previous prime is 389354683. The next prime is 389354701. The reversal of 389354690 is 96453983.

It can be written as a sum of positive squares in 2 ways, for example, as 374693449 + 14661241 = 19357^2 + 3829^2 .

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

It is a super-2 number, since 2×389354690² = 303194149249992200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19467725 + ... + 19467744.

Almost surely, 2^389354690 is an apocalyptic number.

389354690 is a deficient number, since it is larger than the sum of its proper divisors (311483770).

389354690 is a wasteful number, since it uses less digits than its factorization.

389354690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38935476.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 389354690 is about 19732.0726230166. The cubic root of 389354690 is about 730.2111667826.

The spelling of 389354690 in words is "three hundred eighty-nine million, three hundred fifty-four thousand, six hundred ninety".