1129953279 has 24 divisors (see below), whose sum is σ = 1887397680. Its totient is φ = 596018304.

The previous prime is 1129953259. The next prime is 1129953287. The reversal of 1129953279 is 9723599211.

It is not a de Polignac number, because 1129953279 - 2⁵ = 1129953247 is a prime.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129953239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293734 + ... + 297555.

It is an arithmetic number, because the mean of its divisors is an integer number (78641570).

Almost surely, 2^1129953279 is an apocalyptic number.

1129953279 is a deficient number, since it is larger than the sum of its proper divisors (757444401).

1129953279 is a wasteful number, since it uses less digits than its factorization.

1129953279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591319 (or 591312 counting only the distinct ones).

The product of its digits is 306180, while the sum is 48.

The square root of 1129953279 is about 33614.7776877968. Note that the first 3 decimals coincide. The cubic root of 1129953279 is about 1041.5660820410.

The spelling of 1129953279 in words is "one billion, one hundred twenty-nine million, nine hundred fifty-three thousand, two hundred seventy-nine".