872442986 has 4 divisors (see below), whose sum is σ = 1308664482. Its totient is φ = 436221492.

The previous prime is 872442983. The next prime is 872442997. The reversal of 872442986 is 689244278.

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

It can be written as a sum of positive squares in only one way, i.e., 547326025 + 325116961 = 23395^2 + 18031^2 .

It is a super-2 number, since 2×872442986² = 1522313527641192392, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (872442983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218110745 + ... + 218110748.

Almost surely, 2^872442986 is an apocalyptic number.

872442986 is a deficient number, since it is larger than the sum of its proper divisors (436221496).

872442986 is a wasteful number, since it uses less digits than its factorization.

872442986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436221495.

The product of its digits is 1548288, while the sum is 50.

The square root of 872442986 is about 29537.1458675343. The cubic root of 872442986 is about 955.5329886674.

The spelling of 872442986 in words is "eight hundred seventy-two million, four hundred forty-two thousand, nine hundred eighty-six".