389174257 has 4 divisors (see below), whose sum is σ = 394982896. Its totient is φ = 383365620.

The previous prime is 389174239. The next prime is 389174267. The reversal of 389174257 is 752471983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 752471983 = 1321 ⋅569623.

It is a cyclic number.

It is not a de Polignac number, because 389174257 - 2¹¹ = 389172209 is a prime.

It is the 19728-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389174267) by changing a digit.

It is a nontrivial repunit in base 19727.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2904219 + ... + 2904352.

It is an arithmetic number, because the mean of its divisors is an integer number (98745724).

Almost surely, 2^389174257 is an apocalyptic number.

It is an amenable number.

389174257 is a deficient number, since it is larger than the sum of its proper divisors (5808639).

389174257 is an equidigital number, since it uses as much as digits as its factorization.

389174257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5808638.

The product of its digits is 423360, while the sum is 46.

The square root of 389174257 is about 19727.5000190090. The cubic root of 389174257 is about 730.0983522955.

The spelling of 389174257 in words is "three hundred eighty-nine million, one hundred seventy-four thousand, two hundred fifty-seven".