279488860093 has 2 divisors, whose sum is σ = 279488860094. Its totient is φ = 279488860092.

The previous prime is 279488860069. The next prime is 279488860099. The reversal of 279488860093 is 390068884972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211160468484 + 68328391609 = 459522^2 + 261397^2 .

It is a cyclic number.

It is not a de Polignac number, because 279488860093 - 2²⁹ = 278951989181 is a prime.

It is a super-2 number, since 2×279488860093² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279488860099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139744430046 + 139744430047.

It is an arithmetic number, because the mean of its divisors is an integer number (139744430047).

Almost surely, 2^279488860093 is an apocalyptic number.

It is an amenable number.

279488860093 is a deficient number, since it is larger than the sum of its proper divisors (1).

279488860093 is an equidigital number, since it uses as much as digits as its factorization.

279488860093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 279488860093 in words is "two hundred seventy-nine billion, four hundred eighty-eight million, eight hundred sixty thousand, ninety-three".