396886777 has 16 divisors (see below), whose sum is σ = 480902400. Its totient is φ = 319753728.

The previous prime is 396886771. The next prime is 396886783. The reversal of 396886777 is 777688693.

It is an interprime number because it is at equal distance from previous prime (396886771) and next prime (396886783).

It is not a de Polignac number, because 396886777 - 2²⁷ = 262669049 is a prime.

It is a super-2 number, since 2×396886777² = 315038227514895458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396886771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113349 + ... + 116797.

It is an arithmetic number, because the mean of its divisors is an integer number (30056400).

Almost surely, 2^396886777 is an apocalyptic number.

It is an amenable number.

396886777 is a deficient number, since it is larger than the sum of its proper divisors (84015623).

396886777 is a wasteful number, since it uses less digits than its factorization.

396886777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440.

The product of its digits is 21337344, while the sum is 61.

The square root of 396886777 is about 19922.0173928245. The cubic root of 396886777 is about 734.8897837110.

The spelling of 396886777 in words is "three hundred ninety-six million, eight hundred eighty-six thousand, seven hundred seventy-seven".