394268251 has 8 divisors (see below), whose sum is σ = 424988480. Its totient is φ = 363604032.

The previous prime is 394268249. The next prime is 394268293. The reversal of 394268251 is 152862493.

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 394268251 - 2¹ = 394268249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394268351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1246 + ... + 28108.

It is an arithmetic number, because the mean of its divisors is an integer number (53123560).

Almost surely, 2^394268251 is an apocalyptic number.

394268251 is a deficient number, since it is larger than the sum of its proper divisors (30720229).

394268251 is a wasteful number, since it uses less digits than its factorization.

394268251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28005.

The product of its digits is 103680, while the sum is 40.

The square root of 394268251 is about 19856.1892366083. The cubic root of 394268251 is about 733.2700307387.

The spelling of 394268251 in words is "three hundred ninety-four million, two hundred sixty-eight thousand, two hundred fifty-one".