279111401 has 2 divisors, whose sum is σ = 279111402. Its totient is φ = 279111400.

The previous prime is 279111377. The next prime is 279111449. The reversal of 279111401 is 104111972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163226176 + 115885225 = 12776^2 + 10765^2 .

It is a cyclic number.

It is not a de Polignac number, because 279111401 - 2⁶ = 279111337 is a prime.

It is not a weakly prime, because it can be changed into another prime (279111451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139555700 + 139555701.

It is an arithmetic number, because the mean of its divisors is an integer number (139555701).

Almost surely, 2^279111401 is an apocalyptic number.

It is an amenable number.

279111401 is a deficient number, since it is larger than the sum of its proper divisors (1).

279111401 is an equidigital number, since it uses as much as digits as its factorization.

279111401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 279111401 is about 16706.6274573895. The cubic root of 279111401 is about 653.5204652475.

The spelling of 279111401 in words is "two hundred seventy-nine million, one hundred eleven thousand, four hundred one".