872788849 has 9 divisors (see below), whose sum is σ = 902798859. Its totient is φ = 843748080.

The previous prime is 872788837. The next prime is 872788859. The reversal of 872788849 is 948887278.

The square root of 872788849 is 29543.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 363474225 + 509314624 = 19065^2 + 22568^2 .

It is not a de Polignac number, because 872788849 - 2⁵ = 872788817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (872788859) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 915357 + ... + 916309.

Almost surely, 2^872788849 is an apocalyptic number.

872788849 is the 29543-rd square number.

872788849 is the 14772-nd centered octagonal number.

It is an amenable number.

872788849 is a deficient number, since it is larger than the sum of its proper divisors (30010010).

872788849 is an frugal number, since it uses more digits than its factorization.

872788849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968 (or 984 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 61.

The cubic root of 872788849 is about 955.6592394558.

The spelling of 872788849 in words is "eight hundred seventy-two million, seven hundred eighty-eight thousand, eight hundred forty-nine".