1292863879 has 16 divisors (see below), whose sum is σ = 1389592512. Its totient is φ = 1199708928.

The previous prime is 1292863853. The next prime is 1292863883. The reversal of 1292863879 is 9783682921.

It is a cyclic number.

It is not a de Polignac number, because 1292863879 - 2⁹ = 1292863367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292863679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315387 + ... + 319459.

It is an arithmetic number, because the mean of its divisors is an integer number (86849532).

Almost surely, 2^1292863879 is an apocalyptic number.

1292863879 is a deficient number, since it is larger than the sum of its proper divisors (96728633).

1292863879 is a wasteful number, since it uses less digits than its factorization.

1292863879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506.

The product of its digits is 2612736, while the sum is 55.

The square root of 1292863879 is about 35956.4163815028. The cubic root of 1292863879 is about 1089.3922148184.

The spelling of 1292863879 in words is "one billion, two hundred ninety-two million, eight hundred sixty-three thousand, eight hundred seventy-nine".