1129370399 has 4 divisors (see below), whose sum is σ = 1136133264. Its totient is φ = 1122607536.

The previous prime is 1129370381. The next prime is 1129370441. The reversal of 1129370399 is 9930739211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9930739211 = 20443 ⋅485777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129370399 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 (1129370329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3381182 + ... + 3381515.

It is an arithmetic number, because the mean of its divisors is an integer number (284033316).

Almost surely, 2^1129370399 is an apocalyptic number.

1129370399 is a deficient number, since it is larger than the sum of its proper divisors (6762865).

1129370399 is an equidigital number, since it uses as much as digits as its factorization.

1129370399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6762864.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 1129370399 is about 33606.1065730620. The cubic root of 1129370399 is about 1041.3869559154.

The spelling of 1129370399 in words is "one billion, one hundred twenty-nine million, three hundred seventy thousand, three hundred ninety-nine".