450939899 has 2 divisors, whose sum is σ = 450939900. Its totient is φ = 450939898.

The previous prime is 450939887. The next prime is 450939941. The reversal of 450939899 is 998939054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 450939899 - 2¹² = 450935803 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (450939829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225469949 + 225469950.

It is an arithmetic number, because the mean of its divisors is an integer number (225469950).

Almost surely, 2^450939899 is an apocalyptic number.

450939899 is a deficient number, since it is larger than the sum of its proper divisors (1).

450939899 is an equidigital number, since it uses as much as digits as its factorization.

450939899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The square root of 450939899 is about 21235.3455116699. The cubic root of 450939899 is about 766.8425824634.

The spelling of 450939899 in words is "four hundred fifty million, nine hundred thirty-nine thousand, eight hundred ninety-nine".