389426438 has 4 divisors (see below), whose sum is σ = 584139660. Its totient is φ = 194713218.

The previous prime is 389426399. The next prime is 389426441. The reversal of 389426438 is 834624983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834624983 = 487 ⋅1713809.

It is a super-2 number, since 2×389426438² = 303305901226735688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 389426392 and 389426401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97356608 + ... + 97356611.

It is an arithmetic number, because the mean of its divisors is an integer number (146034915).

Almost surely, 2^389426438 is an apocalyptic number.

389426438 is a deficient number, since it is larger than the sum of its proper divisors (194713222).

389426438 is a wasteful number, since it uses less digits than its factorization.

389426438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194713221.

The product of its digits is 995328, while the sum is 47.

The square root of 389426438 is about 19733.8905946091. The cubic root of 389426438 is about 730.2560170390.

The spelling of 389426438 in words is "three hundred eighty-nine million, four hundred twenty-six thousand, four hundred thirty-eight".