1129279408 has 40 divisors (see below), whose sum is σ = 2285853696. Its totient is φ = 539822400.

The previous prime is 1129279381. The next prime is 1129279423. The reversal of 1129279408 is 8049729211.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27453 + ... + 54883.

Almost surely, 2^1129279408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1129279408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1142926848).

1129279408 is an abundant number, since it is smaller than the sum of its proper divisors (1156574288).

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

1129279408 is a wasteful number, since it uses less digits than its factorization.

1129279408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27553 (or 27547 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1129279408 is about 33604.7527590964. The cubic root of 1129279408 is about 1041.3589877113.

The spelling of 1129279408 in words is "one billion, one hundred twenty-nine million, two hundred seventy-nine thousand, four hundred eight".