396880811 has 2 divisors, whose sum is σ = 396880812. Its totient is φ = 396880810.

The previous prime is 396880807. The next prime is 396880829. The reversal of 396880811 is 118088693.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396880811 - 2² = 396880807 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (396820811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198440405 + 198440406.

It is an arithmetic number, because the mean of its divisors is an integer number (198440406).

Almost surely, 2^396880811 is an apocalyptic number.

396880811 is a deficient number, since it is larger than the sum of its proper divisors (1).

396880811 is an equidigital number, since it uses as much as digits as its factorization.

396880811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 44.

The square root of 396880811 is about 19921.8676584300. The cubic root of 396880811 is about 734.8861014061.

The spelling of 396880811 in words is "three hundred ninety-six million, eight hundred eighty thousand, eight hundred eleven".