408792879421 has 8 divisors (see below), whose sum is σ = 412915636224. Its totient is φ = 404673082320.

The previous prime is 408792879367. The next prime is 408792879461. The reversal of 408792879421 is 124978297804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 408792879421 - 2¹⁷ = 408792748349 is a prime.

It is a super-2 number, since 2×408792879421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 408792879421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408792879461) 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 in 7 ways as a sum of consecutive naturals, for example, 461770 + ... + 1015291.

It is an arithmetic number, because the mean of its divisors is an integer number (51614454528).

Almost surely, 2^408792879421 is an apocalyptic number.

It is an amenable number.

408792879421 is a deficient number, since it is larger than the sum of its proper divisors (4122756803).

408792879421 is a wasteful number, since it uses less digits than its factorization.

408792879421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479851.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 408792879421 in words is "four hundred eight billion, seven hundred ninety-two million, eight hundred seventy-nine thousand, four hundred twenty-one".