408399953 has 8 divisors (see below), whose sum is σ = 454981800. Its totient is φ = 363984768.

The previous prime is 408399949. The next prime is 408399961. The reversal of 408399953 is 359993804.

It can be written as a sum of positive squares in 4 ways, for example, as 34480384 + 373919569 = 5872^2 + 19337^2 .

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 408399953 - 2² = 408399949 is a prime.

It is a super-2 number, since 2×408399953² = 333581043220804418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (408399553) 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 in 7 ways as a sum of consecutive naturals, for example, 541268 + ... + 542021.

It is an arithmetic number, because the mean of its divisors is an integer number (56872725).

Almost surely, 2^408399953 is an apocalyptic number.

It is an amenable number.

408399953 is a deficient number, since it is larger than the sum of its proper divisors (46581847).

408399953 is a wasteful number, since it uses less digits than its factorization.

408399953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083331.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 408399953 is about 20208.9077636571. The cubic root of 408399953 is about 741.9282272564.

The spelling of 408399953 in words is "four hundred eight million, three hundred ninety-nine thousand, nine hundred fifty-three".