396531859 has 2 divisors, whose sum is σ = 396531860. Its totient is φ = 396531858.

The previous prime is 396531857. The next prime is 396531899. The reversal of 396531859 is 958135693.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 396531859 - 2¹ = 396531857 is a prime.

Together with 396531857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (396531857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198265929 + 198265930.

It is an arithmetic number, because the mean of its divisors is an integer number (198265930).

Almost surely, 2^396531859 is an apocalyptic number.

396531859 is a deficient number, since it is larger than the sum of its proper divisors (1).

396531859 is an equidigital number, since it uses as much as digits as its factorization.

396531859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 874800, while the sum is 49.

The square root of 396531859 is about 19913.1077182845. The cubic root of 396531859 is about 734.6706587496.

The spelling of 396531859 in words is "three hundred ninety-six million, five hundred thirty-one thousand, eight hundred fifty-nine".