408392054779 has 2 divisors, whose sum is σ = 408392054780. Its totient is φ = 408392054778.

The previous prime is 408392054753. The next prime is 408392054789. The reversal of 408392054779 is 977450293804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408392054779 - 2⁹ = 408392054267 is a prime.

It is a super-2 number, since 2×408392054779² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (408392054789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204196027389 + 204196027390.

It is an arithmetic number, because the mean of its divisors is an integer number (204196027390).

Almost surely, 2^408392054779 is an apocalyptic number.

408392054779 is a deficient number, since it is larger than the sum of its proper divisors (1).

408392054779 is an equidigital number, since it uses as much as digits as its factorization.

408392054779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 408392054779 in words is "four hundred eight billion, three hundred ninety-two million, fifty-four thousand, seven hundred seventy-nine".