869513489 has 16 divisors (see below), whose sum is σ = 962841600. Its totient is φ = 780196800.

The previous prime is 869513479. The next prime is 869513507. The reversal of 869513489 is 984315968.

It is a cyclic number.

It is not a de Polignac number, because 869513489 - 2¹² = 869509393 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 869513489.

It is not an unprimeable number, because it can be changed into a prime (869513429) 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, 86264 + ... + 95814.

It is an arithmetic number, because the mean of its divisors is an integer number (60177600).

Almost surely, 2^869513489 is an apocalyptic number.

It is an amenable number.

869513489 is a deficient number, since it is larger than the sum of its proper divisors (93328111).

869513489 is a wasteful number, since it uses less digits than its factorization.

869513489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9760.

The product of its digits is 1866240, while the sum is 53.

The square root of 869513489 is about 29487.5141203866. The cubic root of 869513489 is about 954.4622902490.

The spelling of 869513489 in words is "eight hundred sixty-nine million, five hundred thirteen thousand, four hundred eighty-nine".