869889023 has 2 divisors, whose sum is σ = 869889024. Its totient is φ = 869889022.

The previous prime is 869888983. The next prime is 869889037. The reversal of 869889023 is 320988968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 869889023 - 2¹⁴ = 869872639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869889043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434944511 + 434944512.

It is an arithmetic number, because the mean of its divisors is an integer number (434944512).

Almost surely, 2^869889023 is an apocalyptic number.

869889023 is a deficient number, since it is larger than the sum of its proper divisors (1).

869889023 is an equidigital number, since it uses as much as digits as its factorization.

869889023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 869889023 is about 29493.8811111729. The cubic root of 869889023 is about 954.5996779788.

The spelling of 869889023 in words is "eight hundred sixty-nine million, eight hundred eighty-nine thousand, twenty-three".