869113947 has 16 divisors (see below), whose sum is σ = 1248627968. Its totient is φ = 534552480.

The previous prime is 869113939. The next prime is 869113969. The reversal of 869113947 is 749311968.

It is a happy number.

It is not a de Polignac number, because 869113947 - 2³ = 869113939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 869113896 and 869113905.

It is not an unprimeable number, because it can be changed into a prime (869113907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85308 + ... + 94950.

It is an arithmetic number, because the mean of its divisors is an integer number (78039248).

Almost surely, 2^869113947 is an apocalyptic number.

869113947 is a deficient number, since it is larger than the sum of its proper divisors (379514021).

869113947 is a wasteful number, since it uses less digits than its factorization.

869113947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11970.

The product of its digits is 326592, while the sum is 48.

The square root of 869113947 is about 29480.7385762297. The cubic root of 869113947 is about 954.3160758421.

The spelling of 869113947 in words is "eight hundred sixty-nine million, one hundred thirteen thousand, nine hundred forty-seven".