396542899 has 2 divisors, whose sum is σ = 396542900. Its totient is φ = 396542898.

The previous prime is 396542879. The next prime is 396542911. The reversal of 396542899 is 998245693.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 396542899 - 2⁷ = 396542771 is a prime.

It is not a weakly prime, because it can be changed into another prime (396542849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198271449 + 198271450.

It is an arithmetic number, because the mean of its divisors is an integer number (198271450).

Almost surely, 2^396542899 is an apocalyptic number.

396542899 is a deficient number, since it is larger than the sum of its proper divisors (1).

396542899 is an equidigital number, since it uses as much as digits as its factorization.

396542899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 55.

The square root of 396542899 is about 19913.3849207010. The cubic root of 396542899 is about 734.6774767715.

It can be divided in two parts, 3965 and 42899, that added together give a palindrome (46864).

The spelling of 396542899 in words is "three hundred ninety-six million, five hundred forty-two thousand, eight hundred ninety-nine".