869445117 has 8 divisors (see below), whose sum is σ = 1288066880. Its totient is φ = 579630060.

The previous prime is 869445091. The next prime is 869445133. The reversal of 869445117 is 711544968.

It is not a de Polignac number, because 869445117 - 2⁶ = 869445053 is a prime.

It is a super-2 number, since 2×869445117² = 1511869622950287378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869445167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16100809 + ... + 16100862.

It is an arithmetic number, because the mean of its divisors is an integer number (161008360).

Almost surely, 2^869445117 is an apocalyptic number.

It is an amenable number.

869445117 is a deficient number, since it is larger than the sum of its proper divisors (418621763).

869445117 is a wasteful number, since it uses less digits than its factorization.

869445117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32201680 (or 32201674 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 869445117 is about 29486.3547594476. The cubic root of 869445117 is about 954.4372723483.

The spelling of 869445117 in words is "eight hundred sixty-nine million, four hundred forty-five thousand, one hundred seventeen".