408972899 has 2 divisors, whose sum is σ = 408972900. Its totient is φ = 408972898.

The previous prime is 408972869. The next prime is 408972901. The reversal of 408972899 is 998279804.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408972899 - 2⁸ = 408972643 is a prime.

Together with 408972901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (408972869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204486449 + 204486450.

It is an arithmetic number, because the mean of its divisors is an integer number (204486450).

Almost surely, 2^408972899 is an apocalyptic number.

408972899 is a deficient number, since it is larger than the sum of its proper divisors (1).

408972899 is an equidigital number, since it uses as much as digits as its factorization.

408972899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 408972899 is about 20223.0783759545. The cubic root of 408972899 is about 742.2750165392.

The spelling of 408972899 in words is "four hundred eight million, nine hundred seventy-two thousand, eight hundred ninety-nine".