808021923 has 4 divisors (see below), whose sum is σ = 1077362568. Its totient is φ = 538681280.

The previous prime is 808021859. The next prime is 808021927. The reversal of 808021923 is 329120808.

808021923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 808021923 - 2⁶ = 808021859 is a prime.

It is a super-3 number, since 3×808021923³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (808021927) 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, 134670318 + ... + 134670323.

It is an arithmetic number, because the mean of its divisors is an integer number (269340642).

Almost surely, 2^808021923 is an apocalyptic number.

808021923 is a deficient number, since it is larger than the sum of its proper divisors (269340645).

808021923 is a wasteful number, since it uses less digits than its factorization.

808021923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269340644.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 808021923 is about 28425.7264287124. The cubic root of 808021923 is about 931.4103252156.

It can be divided in two parts, 8080 and 21923, that added together give a palindrome (30003).

The spelling of 808021923 in words is "eight hundred eight million, twenty-one thousand, nine hundred twenty-three".