386473431 has 4 divisors (see below), whose sum is σ = 515297912. Its totient is φ = 257648952.

The previous prime is 386473391. The next prime is 386473441. The reversal of 386473431 is 134374683.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 386473431 - 2⁷ = 386473303 is a prime.

It is a super-2 number, since 2×386473431² = 298723425737823522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 386473431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386473441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64412236 + ... + 64412241.

It is an arithmetic number, because the mean of its divisors is an integer number (128824478).

Almost surely, 2^386473431 is an apocalyptic number.

386473431 is a deficient number, since it is larger than the sum of its proper divisors (128824481).

386473431 is a wasteful number, since it uses less digits than its factorization.

386473431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128824480.

The product of its digits is 145152, while the sum is 39.

The square root of 386473431 is about 19658.9275139820. The cubic root of 386473431 is about 728.4054964075.

The spelling of 386473431 in words is "three hundred eighty-six million, four hundred seventy-three thousand, four hundred thirty-one".