808953623 has 4 divisors (see below), whose sum is σ = 820347408. Its totient is φ = 797559840.

The previous prime is 808953611. The next prime is 808953697. The reversal of 808953623 is 326359808.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 808953623 - 2²⁰ = 807905047 is a prime.

It is a super-2 number, since 2×808953623² = 1308811928329652258, which 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 (808953323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5696786 + ... + 5696927.

It is an arithmetic number, because the mean of its divisors is an integer number (205086852).

Almost surely, 2^808953623 is an apocalyptic number.

808953623 is a deficient number, since it is larger than the sum of its proper divisors (11393785).

808953623 is a wasteful number, since it uses less digits than its factorization.

808953623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11393784.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 808953623 is about 28442.1100307273. The cubic root of 808953623 is about 931.7681792325.

The spelling of 808953623 in words is "eight hundred eight million, nine hundred fifty-three thousand, six hundred twenty-three".