396279251 has 8 divisors (see below), whose sum is σ = 405578880. Its totient is φ = 387047232.

The previous prime is 396279239. The next prime is 396279253. The reversal of 396279251 is 152972693.

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 396279251 - 2¹⁸ = 396017107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396279253) 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, 4946 + ... + 28583.

It is an arithmetic number, because the mean of its divisors is an integer number (50697360).

Almost surely, 2^396279251 is an apocalyptic number.

396279251 is a deficient number, since it is larger than the sum of its proper divisors (9299629).

396279251 is a wasteful number, since it uses less digits than its factorization.

396279251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33805.

The product of its digits is 204120, while the sum is 44.

The square root of 396279251 is about 19906.7639509791. The cubic root of 396279251 is about 734.5146199145.

The spelling of 396279251 in words is "three hundred ninety-six million, two hundred seventy-nine thousand, two hundred fifty-one".