869609601 has 40 divisors (see below), whose sum is σ = 1488559424. Its totient is φ = 495603360.

The previous prime is 869609593. The next prime is 869609603. The reversal of 869609601 is 106906968.

It is not a de Polignac number, because 869609601 - 2³ = 869609593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869609603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 236886 + ... + 240528.

Almost surely, 2^869609601 is an apocalyptic number.

869609601 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

869609601 is a deficient number, since it is larger than the sum of its proper divisors (618949823).

869609601 is a wasteful number, since it uses less digits than its factorization.

869609601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083 (or 4074 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 869609601 is about 29489.1437820768. The cubic root of 869609601 is about 954.4974562358.

The spelling of 869609601 in words is "eight hundred sixty-nine million, six hundred nine thousand, six hundred one".