396913877 has 2 divisors, whose sum is σ = 396913878. Its totient is φ = 396913876.

The previous prime is 396913871. The next prime is 396913889. The reversal of 396913877 is 778319693.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356794321 + 40119556 = 18889^2 + 6334^2 .

It is a cyclic number.

It is not a de Polignac number, because 396913877 - 2¹⁰ = 396912853 is a prime.

It is a super-2 number, since 2×396913877² = 315081251510342258, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396913871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198456938 + 198456939.

It is an arithmetic number, because the mean of its divisors is an integer number (198456939).

Almost surely, 2^396913877 is an apocalyptic number.

It is an amenable number.

396913877 is a deficient number, since it is larger than the sum of its proper divisors (1).

396913877 is an equidigital number, since it uses as much as digits as its factorization.

396913877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 53.

The square root of 396913877 is about 19922.6975332157. The cubic root of 396913877 is about 734.9065097741.

The spelling of 396913877 in words is "three hundred ninety-six million, nine hundred thirteen thousand, eight hundred seventy-seven".