870983879 has 2 divisors, whose sum is σ = 870983880. Its totient is φ = 870983878.

The previous prime is 870983833. The next prime is 870983887. The reversal of 870983879 is 978389078.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870983879 is a prime.

It is a super-2 number, since 2×870983879² = 1517225834955773282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870983279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435491939 + 435491940.

It is an arithmetic number, because the mean of its divisors is an integer number (435491940).

Almost surely, 2^870983879 is an apocalyptic number.

870983879 is a deficient number, since it is larger than the sum of its proper divisors (1).

870983879 is an equidigital number, since it uses as much as digits as its factorization.

870983879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 59.

The square root of 870983879 is about 29512.4360058603. The cubic root of 870983879 is about 955.0000014619. Note that the first 5 decimals are identical.

The spelling of 870983879 in words is "eight hundred seventy million, nine hundred eighty-three thousand, eight hundred seventy-nine".