1129075939 has 4 divisors (see below), whose sum is σ = 1129146480. Its totient is φ = 1129005400.

The previous prime is 1129075933. The next prime is 1129075949. The reversal of 1129075939 is 9395709211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9395709211 = 7 ⋅1342244173.

It is a cyclic number.

It is not a de Polignac number, because 1129075939 - 2¹⁵ = 1129043171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129075933) 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, 1557 + ... + 47545.

It is an arithmetic number, because the mean of its divisors is an integer number (282286620).

Almost surely, 2^1129075939 is an apocalyptic number.

1129075939 is a deficient number, since it is larger than the sum of its proper divisors (70541).

1129075939 is an equidigital number, since it uses as much as digits as its factorization.

1129075939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70540.

The product of its (nonzero) digits is 153090, while the sum is 46.

The square root of 1129075939 is about 33601.7252384457. The cubic root of 1129075939 is about 1041.2964413367.

The spelling of 1129075939 in words is "one billion, one hundred twenty-nine million, seventy-five thousand, nine hundred thirty-nine".