402472391899 has 2 divisors, whose sum is σ = 402472391900. Its totient is φ = 402472391898.

The previous prime is 402472391897. The next prime is 402472391921. The reversal of 402472391899 is 998193274204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402472391899 - 2¹ = 402472391897 is a prime.

Together with 402472391897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (402472391897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201236195949 + 201236195950.

It is an arithmetic number, because the mean of its divisors is an integer number (201236195950).

Almost surely, 2^402472391899 is an apocalyptic number.

402472391899 is a deficient number, since it is larger than the sum of its proper divisors (1).

402472391899 is an equidigital number, since it uses as much as digits as its factorization.

402472391899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 402472391899 in words is "four hundred two billion, four hundred seventy-two million, three hundred ninety-one thousand, eight hundred ninety-nine".