408781023 has 16 divisors (see below), whose sum is σ = 623416320. Its totient is φ = 233397216.

The previous prime is 408780971. The next prime is 408781027. The reversal of 408781023 is 320187804.

It is not a de Polignac number, because 408781023 - 2⁶ = 408780959 is a prime.

It is a super-3 number, since 3×408781023³ (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 (408781027) 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, 20533 + ... + 35201.

It is an arithmetic number, because the mean of its divisors is an integer number (38963520).

Almost surely, 2^408781023 is an apocalyptic number.

408781023 is a deficient number, since it is larger than the sum of its proper divisors (214635297).

408781023 is a wasteful number, since it uses less digits than its factorization.

408781023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16006.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 408781023 is about 20218.3338334295. Note that the first 3 decimals coincide. The cubic root of 408781023 is about 742.1589150886.

The spelling of 408781023 in words is "four hundred eight million, seven hundred eighty-one thousand, twenty-three".