869513490 has 24 divisors (see below), whose sum is σ = 2260735308. Its totient is φ = 231870240.

The previous prime is 869513479. The next prime is 869513507. The reversal of 869513490 is 94315968.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 867361401 + 2152089 = 29451^2 + 1467^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4830541 + ... + 4830720.

Almost surely, 2^869513490 is an apocalyptic number.

869513490 is an abundant number, since it is smaller than the sum of its proper divisors (1391221818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869513490 is a wasteful number, since it uses less digits than its factorization.

869513490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9661274 (or 9661271 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 869513490 is about 29487.5141373429. The cubic root of 869513490 is about 954.4622906149.

The spelling of 869513490 in words is "eight hundred sixty-nine million, five hundred thirteen thousand, four hundred ninety".