869477959 has 4 divisors (see below), whose sum is σ = 993689104. Its totient is φ = 745266816.

The previous prime is 869477953. The next prime is 869477969. The reversal of 869477959 is 959774968.

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

It is not a de Polignac number, because 869477959 - 2⁷ = 869477831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 869477959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869477953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62105562 + ... + 62105575.

It is an arithmetic number, because the mean of its divisors is an integer number (248422276).

Almost surely, 2^869477959 is an apocalyptic number.

869477959 is a deficient number, since it is larger than the sum of its proper divisors (124211145).

869477959 is a wasteful number, since it uses less digits than its factorization.

869477959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124211144.

The product of its digits is 34292160, while the sum is 64.

The square root of 869477959 is about 29486.9116558517. The cubic root of 869477959 is about 954.4492896812.

The spelling of 869477959 in words is "eight hundred sixty-nine million, four hundred seventy-seven thousand, nine hundred fifty-nine".