396377213 has 2 divisors, whose sum is σ = 396377214. Its totient is φ = 396377212.

The previous prime is 396377209. The next prime is 396377237. The reversal of 396377213 is 312773693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205578244 + 190798969 = 14338^2 + 13813^2 .

It is a cyclic number.

It is not a de Polignac number, because 396377213 - 2² = 396377209 is a prime.

It is a super-2 number, since 2×396377213² = 314229789971294738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (396377203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198188606 + 198188607.

It is an arithmetic number, because the mean of its divisors is an integer number (198188607).

Almost surely, 2^396377213 is an apocalyptic number.

It is an amenable number.

396377213 is a deficient number, since it is larger than the sum of its proper divisors (1).

396377213 is an equidigital number, since it uses as much as digits as its factorization.

396377213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 142884, while the sum is 41.

The square root of 396377213 is about 19909.2243193953. The cubic root of 396377213 is about 734.5751400256.

The spelling of 396377213 in words is "three hundred ninety-six million, three hundred seventy-seven thousand, two hundred thirteen".