389394251 has 8 divisors (see below), whose sum is σ = 394673664. Its totient is φ = 384129000.

The previous prime is 389394199. The next prime is 389394259. The reversal of 389394251 is 152493983.

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

It is a cyclic number.

It is not a de Polignac number, because 389394251 - 2¹⁰ = 389393227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389394259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59210 + ... + 65456.

It is an arithmetic number, because the mean of its divisors is an integer number (49334208).

Almost surely, 2^389394251 is an apocalyptic number.

389394251 is a deficient number, since it is larger than the sum of its proper divisors (5279413).

389394251 is an equidigital number, since it uses as much as digits as its factorization.

389394251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7081.

The product of its digits is 233280, while the sum is 44.

The square root of 389394251 is about 19733.0750518007. The cubic root of 389394251 is about 730.2358973658.

The spelling of 389394251 in words is "three hundred eighty-nine million, three hundred ninety-four thousand, two hundred fifty-one".