875649789 has 48 divisors (see below), whose sum is σ = 1529249280. Its totient is φ = 471653280.

The previous prime is 875649781. The next prime is 875649829. The reversal of 875649789 is 987946578.

It is not a de Polignac number, because 875649789 - 2³ = 875649781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (875649781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 250834 + ... + 254300.

It is an arithmetic number, because the mean of its divisors is an integer number (31859360).

Almost surely, 2^875649789 is an apocalyptic number.

It is an amenable number.

875649789 is a deficient number, since it is larger than the sum of its proper divisors (653599491).

875649789 is a wasteful number, since it uses less digits than its factorization.

875649789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3710 (or 3707 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The square root of 875649789 is about 29591.3803158960. The cubic root of 875649789 is about 956.7022950198.

The spelling of 875649789 in words is "eight hundred seventy-five million, six hundred forty-nine thousand, seven hundred eighty-nine".