279070889 has 2 divisors, whose sum is σ = 279070890. Its totient is φ = 279070888.

The previous prime is 279070853. The next prime is 279070931. The reversal of 279070889 is 988070972.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233845264 + 45225625 = 15292^2 + 6725^2 .

It is a cyclic number.

It is not a de Polignac number, because 279070889 - 2¹² = 279066793 is a prime.

It is a super-2 number, since 2×279070889² = 155761122174500642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (279070829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139535444 + 139535445.

It is an arithmetic number, because the mean of its divisors is an integer number (139535445).

Almost surely, 2^279070889 is an apocalyptic number.

It is an amenable number.

279070889 is a deficient number, since it is larger than the sum of its proper divisors (1).

279070889 is an equidigital number, since it uses as much as digits as its factorization.

279070889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 279070889 is about 16705.4149604253. The cubic root of 279070889 is about 653.4888450150.

The spelling of 279070889 in words is "two hundred seventy-nine million, seventy thousand, eight hundred eighty-nine".