279349499497 has 2 divisors, whose sum is σ = 279349499498. Its totient is φ = 279349499496.

The previous prime is 279349499467. The next prime is 279349499537. The reversal of 279349499497 is 794994943972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 238440796416 + 40908703081 = 488304^2 + 202259^2 .

It is a cyclic number.

It is not a de Polignac number, because 279349499497 - 2⁷ = 279349499369 is a prime.

It is a super-2 number, since 2×279349499497² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (279349499467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139674749748 + 139674749749.

It is an arithmetic number, because the mean of its divisors is an integer number (139674749749).

Almost surely, 2^279349499497 is an apocalyptic number.

It is an amenable number.

279349499497 is a deficient number, since it is larger than the sum of its proper divisors (1).

279349499497 is an equidigital number, since it uses as much as digits as its factorization.

279349499497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1111065984, while the sum is 76.

The spelling of 279349499497 in words is "two hundred seventy-nine billion, three hundred forty-nine million, four hundred ninety-nine thousand, four hundred ninety-seven".