872788859 has 2 divisors, whose sum is σ = 872788860. Its totient is φ = 872788858.

The previous prime is 872788837. The next prime is 872788877. The reversal of 872788859 is 958887278.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 872788859 - 2¹² = 872784763 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (872788159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436394429 + 436394430.

It is an arithmetic number, because the mean of its divisors is an integer number (436394430).

Almost surely, 2^872788859 is an apocalyptic number.

872788859 is a deficient number, since it is larger than the sum of its proper divisors (1).

872788859 is an equidigital number, since it uses as much as digits as its factorization.

872788859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18063360, while the sum is 62.

The square root of 872788859 is about 29543.0001692448. Note that the first 3 decimals coincide. The cubic root of 872788859 is about 955.6592431056.

The spelling of 872788859 in words is "eight hundred seventy-two million, seven hundred eighty-eight thousand, eight hundred fifty-nine".