408881493 has 8 divisors (see below), whose sum is σ = 605750400. Its totient is φ = 272587644.

The previous prime is 408881483. The next prime is 408881567. The reversal of 408881493 is 394188804.

408881493 is a `hidden beast` number, since 4 + 0 + 88 + 81 + 493 = 666.

It is not a de Polignac number, because 408881493 - 2⁴ = 408881477 is a prime.

It is a super-3 number, since 3×408881493³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408881443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7571853 + ... + 7571906.

It is an arithmetic number, because the mean of its divisors is an integer number (75718800).

Almost surely, 2^408881493 is an apocalyptic number.

It is an amenable number.

408881493 is a deficient number, since it is larger than the sum of its proper divisors (196868907).

408881493 is a wasteful number, since it uses less digits than its factorization.

408881493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15143768 (or 15143762 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 408881493 is about 20220.8183068836. The cubic root of 408881493 is about 742.2197125931.

The spelling of 408881493 in words is "four hundred eight million, eight hundred eighty-one thousand, four hundred ninety-three".