1279659144 has 32 divisors (see below), whose sum is σ = 3201837120. Its totient is φ = 426194496.

The previous prime is 1279659131. The next prime is 1279659163. The reversal of 1279659144 is 4419569721.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1279659093 and 1279659102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7554 + ... + 51150.

It is an arithmetic number, because the mean of its divisors is an integer number (100057410).

Almost surely, 2^1279659144 is an apocalyptic number.

It is an amenable number.

1279659144 is an abundant number, since it is smaller than the sum of its proper divisors (1922177976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1279659144 is a wasteful number, since it uses less digits than its factorization.

1279659144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44829 (or 44825 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 1279659144 is about 35772.3237154088. The cubic root of 1279659144 is about 1085.6706604223.

The spelling of 1279659144 in words is "one billion, two hundred seventy-nine million, six hundred fifty-nine thousand, one hundred forty-four".