869699423 has 2 divisors, whose sum is σ = 869699424. Its totient is φ = 869699422.

The previous prime is 869699323. The next prime is 869699431. The reversal of 869699423 is 324996968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 869699423 - 2¹⁸ = 869437279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869699323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434849711 + 434849712.

It is an arithmetic number, because the mean of its divisors is an integer number (434849712).

Almost surely, 2^869699423 is an apocalyptic number.

869699423 is a deficient number, since it is larger than the sum of its proper divisors (1).

869699423 is an equidigital number, since it uses as much as digits as its factorization.

869699423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 56.

The square root of 869699423 is about 29490.6667099949. Note that the first 3 decimals coincide. The cubic root of 869699423 is about 954.5303184607.

The spelling of 869699423 in words is "eight hundred sixty-nine million, six hundred ninety-nine thousand, four hundred twenty-three".