873649332 has 18 divisors (see below), whose sum is σ = 2208391458. Its totient is φ = 291216432.

The previous prime is 873649321. The next prime is 873649339. The reversal of 873649332 is 233946378.

It can be written as a sum of positive squares in only one way, i.e., 590198436 + 283450896 = 24294^2 + 16836^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (873649339) 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 5 ways as a sum of consecutive naturals, for example, 12133983 + ... + 12134054.

Almost surely, 2^873649332 is an apocalyptic number.

It is an amenable number.

873649332 is an abundant number, since it is smaller than the sum of its proper divisors (1334742126).

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

873649332 is a wasteful number, since it uses less digits than its factorization.

873649332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24268047 (or 24268042 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 873649332 is about 29557.5596421626. The cubic root of 873649332 is about 955.9731979554.

The spelling of 873649332 in words is "eight hundred seventy-three million, six hundred forty-nine thousand, three hundred thirty-two".