872606289 has 4 divisors (see below), whose sum is σ = 1163475056. Its totient is φ = 581737524.

The previous prime is 872606233. The next prime is 872606299. The reversal of 872606289 is 982606278.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 872606289 - 2¹² = 872602193 is a prime.

It is a super-2 number, since 2×872606289² = 1522883471204703042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872606299) 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, 145434379 + ... + 145434384.

It is an arithmetic number, because the mean of its divisors is an integer number (290868764).

Almost surely, 2^872606289 is an apocalyptic number.

It is an amenable number.

872606289 is a deficient number, since it is larger than the sum of its proper divisors (290868767).

872606289 is a wasteful number, since it uses less digits than its factorization.

872606289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290868766.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 872606289 is about 29539.9101048057. The cubic root of 872606289 is about 955.5926035157.

The spelling of 872606289 in words is "eight hundred seventy-two million, six hundred six thousand, two hundred eighty-nine".