870983279 has 2 divisors, whose sum is σ = 870983280. Its totient is φ = 870983278.

The previous prime is 870983263. The next prime is 870983299. The reversal of 870983279 is 972389078.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 870983279 - 2⁴ = 870983263 is a prime.

It is a super-2 number, since 2×870983279² = 1517223744595183682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 870983279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870983209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435491639 + 435491640.

It is an arithmetic number, because the mean of its divisors is an integer number (435491640).

Almost surely, 2^870983279 is an apocalyptic number.

870983279 is a deficient number, since it is larger than the sum of its proper divisors (1).

870983279 is an equidigital number, since it uses as much as digits as its factorization.

870983279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 870983279 is about 29512.4258406523. The cubic root of 870983279 is about 954.9997821697. Note that the first 3 decimals are identical.

The spelling of 870983279 in words is "eight hundred seventy million, nine hundred eighty-three thousand, two hundred seventy-nine".