279971149129 has 27 divisors (see below), whose sum is σ = 328063404981. Its totient is φ = 238232339520.

The previous prime is 279971149097. The next prime is 279971149147. The reversal of 279971149129 is 921941179972.

The square root of 279971149129 is 529123.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 32265859129 + 247705290000 = 179627^2 + 497700^2 .

It is not a de Polignac number, because 279971149129 - 2⁵ = 279971149097 is a prime.

It is a super-2 number, since 2×279971149129² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (279971140129) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 996338469 + ... + 996338749.

Almost surely, 2^279971149129 is an apocalyptic number.

279971149129 is the 529123-rd square number.

279971149129 is the 264562-nd centered octagonal number.

It is an amenable number.

279971149129 is a deficient number, since it is larger than the sum of its proper divisors (48092255852).

279971149129 is an frugal number, since it uses more digits than its factorization.

279971149129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 557 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 61.

The spelling of 279971149129 in words is "two hundred seventy-nine billion, nine hundred seventy-one million, one hundred forty-nine thousand, one hundred twenty-nine".