408407408407 has 16 divisors (see below), whose sum is σ = 426746890080. Its totient is φ = 390353040000.

The previous prime is 408407408393. The next prime is 408407408413. The reversal of 408407408407 is 704804704804.

It is a cyclic number.

It is not a de Polignac number, because 408407408407 - 2¹⁵ = 408407375639 is a prime.

It is a super-2 number, since 2×408407408407² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408407408447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28992988 + ... + 29007070.

It is an arithmetic number, because the mean of its divisors is an integer number (26671680630).

Almost surely, 2^408407408407 is an apocalyptic number.

408407408407 is a deficient number, since it is larger than the sum of its proper divisors (18339481673).

408407408407 is a wasteful number, since it uses less digits than its factorization.

408407408407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24114.

The product of its (nonzero) digits is 802816, while the sum is 46.

The spelling of 408407408407 in words is "four hundred eight billion, four hundred seven million, four hundred eight thousand, four hundred seven".