389465738 has 4 divisors (see below), whose sum is σ = 584198610. Its totient is φ = 194732868.

The previous prime is 389465729. The next prime is 389465759. The reversal of 389465738 is 837564983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837564983 = 3727 ⋅224729.

It can be written as a sum of positive squares in only one way, i.e., 379587289 + 9878449 = 19483^2 + 3143^2 .

It is a super-2 number, since 2×389465738² = 303367122151769288, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 389465738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97366433 + ... + 97366436.

Almost surely, 2^389465738 is an apocalyptic number.

389465738 is a deficient number, since it is larger than the sum of its proper divisors (194732872).

389465738 is a wasteful number, since it uses less digits than its factorization.

389465738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194732871.

The product of its digits is 4354560, while the sum is 53.

The square root of 389465738 is about 19734.8863183957. The cubic root of 389465738 is about 730.2805814525.

The spelling of 389465738 in words is "three hundred eighty-nine million, four hundred sixty-five thousand, seven hundred thirty-eight".