869532372 has 18 divisors (see below), whose sum is σ = 2197984698. Its totient is φ = 289844112.

The previous prime is 869532329. The next prime is 869532373. The reversal of 869532372 is 273235968.

869532372 is a `hidden beast` number, since 86 + 9 + 532 + 37 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 638370756 + 231161616 = 25266^2 + 15204^2 .

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

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869532373) 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, 12076803 + ... + 12076874.

It is an arithmetic number, because the mean of its divisors is an integer number (122110261).

Almost surely, 2^869532372 is an apocalyptic number.

It is an amenable number.

869532372 is an abundant number, since it is smaller than the sum of its proper divisors (1328452326).

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

869532372 is a wasteful number, since it uses less digits than its factorization.

869532372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24153687 (or 24153682 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 869532372 is about 29487.8343050147. The cubic root of 869532372 is about 954.4691994693.

The spelling of 869532372 in words is "eight hundred sixty-nine million, five hundred thirty-two thousand, three hundred seventy-two".