396804277 has 4 divisors (see below), whose sum is σ = 396848160. Its totient is φ = 396760396.

The previous prime is 396804271. The next prime is 396804299. The reversal of 396804277 is 772408693.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 396804277 - 2²⁷ = 262586549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396804271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2827 + ... + 28312.

It is an arithmetic number, because the mean of its divisors is an integer number (99212040).

Almost surely, 2^396804277 is an apocalyptic number.

It is an amenable number.

396804277 is a deficient number, since it is larger than the sum of its proper divisors (43883).

396804277 is a wasteful number, since it uses less digits than its factorization.

396804277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43882.

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 396804277 is about 19919.9467117761. The cubic root of 396804277 is about 734.8388601966.

The spelling of 396804277 in words is "three hundred ninety-six million, eight hundred four thousand, two hundred seventy-seven".