396779877 has 96 divisors (see below), whose sum is σ = 688816128. Its totient is φ = 226328256.

The previous prime is 396779863. The next prime is 396779891. The reversal of 396779877 is 778977693.

It is an interprime number because it is at equal distance from previous prime (396779863) and next prime (396779891).

It is not a de Polignac number, because 396779877 - 2¹⁸ = 396517733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396779857) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3124188 + ... + 3124314.

It is an arithmetic number, because the mean of its divisors is an integer number (7175168).

Almost surely, 2^396779877 is an apocalyptic number.

It is an amenable number.

396779877 is a deficient number, since it is larger than the sum of its proper divisors (292036251).

396779877 is a wasteful number, since it uses less digits than its factorization.

396779877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 209 counting only the distinct ones).

The product of its digits is 28005264, while the sum is 63.

The square root of 396779877 is about 19919.3342509231. The cubic root of 396779877 is about 734.8237978289.

The spelling of 396779877 in words is "three hundred ninety-six million, seven hundred seventy-nine thousand, eight hundred seventy-seven".