279037140493 has 2 divisors, whose sum is σ = 279037140494. Its totient is φ = 279037140492.

The previous prime is 279037140451. The next prime is 279037140517. The reversal of 279037140493 is 394041730972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141145230249 + 137891910244 = 375693^2 + 371338^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-279037140493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279037140793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139518570246 + 139518570247.

It is an arithmetic number, because the mean of its divisors is an integer number (139518570247).

Almost surely, 2^279037140493 is an apocalyptic number.

It is an amenable number.

279037140493 is a deficient number, since it is larger than the sum of its proper divisors (1).

279037140493 is an equidigital number, since it uses as much as digits as its factorization.

279037140493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The spelling of 279037140493 in words is "two hundred seventy-nine billion, thirty-seven million, one hundred forty thousand, four hundred ninety-three".