396659977 has 8 divisors (see below), whose sum is σ = 454459392. Its totient is φ = 339144000.

The previous prime is 396659959. The next prime is 396659987. The reversal of 396659977 is 779956693.

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 396659977 - 2²³ = 388271369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396659927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67849 + ... + 73462.

It is an arithmetic number, because the mean of its divisors is an integer number (56807424).

Almost surely, 2^396659977 is an apocalyptic number.

It is an amenable number.

396659977 is a deficient number, since it is larger than the sum of its proper divisors (57799415).

396659977 is a wasteful number, since it uses less digits than its factorization.

396659977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141719.

The product of its digits is 19289340, while the sum is 61.

The square root of 396659977 is about 19916.3243847855. The cubic root of 396659977 is about 734.7497733680.

The spelling of 396659977 in words is "three hundred ninety-six million, six hundred fifty-nine thousand, nine hundred seventy-seven".