869023487 has 2 divisors, whose sum is σ = 869023488. Its totient is φ = 869023486.

The previous prime is 869023481. The next prime is 869023489. The reversal of 869023487 is 784320968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 869023487 - 2⁴ = 869023471 is a prime.

Together with 869023489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869023481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434511743 + 434511744.

It is an arithmetic number, because the mean of its divisors is an integer number (434511744).

Almost surely, 2^869023487 is an apocalyptic number.

869023487 is a deficient number, since it is larger than the sum of its proper divisors (1).

869023487 is an equidigital number, since it uses as much as digits as its factorization.

869023487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 869023487 is about 29479.2043142280. The cubic root of 869023487 is about 954.2829653285.

The spelling of 869023487 in words is "eight hundred sixty-nine million, twenty-three thousand, four hundred eighty-seven".