396278279 has 8 divisors (see below), whose sum is σ = 426701520. Its totient is φ = 366645376.

The previous prime is 396278273. The next prime is 396278303. The reversal of 396278279 is 972872693.

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 396278279 - 2²⁸ = 127842823 is a prime.

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 396278279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396278273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196544 + ... + 198549.

It is an arithmetic number, because the mean of its divisors is an integer number (53337690).

Almost surely, 2^396278279 is an apocalyptic number.

396278279 is a deficient number, since it is larger than the sum of its proper divisors (30423241).

396278279 is a wasteful number, since it uses less digits than its factorization.

396278279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395169.

The product of its digits is 2286144, while the sum is 53.

The square root of 396278279 is about 19906.7395371517. The cubic root of 396278279 is about 734.5140193710.

The spelling of 396278279 in words is "three hundred ninety-six million, two hundred seventy-eight thousand, two hundred seventy-nine".