279530149 has 2 divisors, whose sum is σ = 279530150. Its totient is φ = 279530148.

The previous prime is 279530093. The next prime is 279530161. The reversal of 279530149 is 941035972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 275327649 + 4202500 = 16593^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 279530149 - 2¹⁷ = 279399077 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (279530189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139765074 + 139765075.

It is an arithmetic number, because the mean of its divisors is an integer number (139765075).

Almost surely, 2^279530149 is an apocalyptic number.

It is an amenable number.

279530149 is a deficient number, since it is larger than the sum of its proper divisors (1).

279530149 is an equidigital number, since it uses as much as digits as its factorization.

279530149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 279530149 is about 16719.1551521002. The cubic root of 279530149 is about 653.8471253124.

The spelling of 279530149 in words is "two hundred seventy-nine million, five hundred thirty thousand, one hundred forty-nine".