872361929 has 4 divisors (see below), whose sum is σ = 873457284. Its totient is φ = 871266576.

The previous prime is 872361911. The next prime is 872361937. The reversal of 872361929 is 929163278.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 727111225 + 145250704 = 26965^2 + 12052^2 .

It is a cyclic number.

It is not a de Polignac number, because 872361929 - 2¹² = 872357833 is a prime.

It is a super-2 number, since 2×872361929² = 1522030670337202082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872361949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546482 + ... + 548075.

It is an arithmetic number, because the mean of its divisors is an integer number (218364321).

Almost surely, 2^872361929 is an apocalyptic number.

It is an amenable number.

872361929 is a deficient number, since it is larger than the sum of its proper divisors (1095355).

872361929 is a wasteful number, since it uses less digits than its factorization.

872361929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095354.

The product of its digits is 326592, while the sum is 47.

The square root of 872361929 is about 29535.7737159533. The cubic root of 872361929 is about 955.5033955068.

The spelling of 872361929 in words is "eight hundred seventy-two million, three hundred sixty-one thousand, nine hundred twenty-nine".