1140872779 has 4 divisors (see below), whose sum is σ = 1141016080. Its totient is φ = 1140729480.

The previous prime is 1140872767. The next prime is 1140872797. The reversal of 1140872779 is 9772780411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9772780411 = 31 ⋅315250981.

It is a cyclic number.

It is not a de Polignac number, because 1140872779 - 2¹⁵ = 1140840011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140872729) 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, 58959 + ... + 75880.

It is an arithmetic number, because the mean of its divisors is an integer number (285254020).

Almost surely, 2^1140872779 is an apocalyptic number.

1140872779 is a deficient number, since it is larger than the sum of its proper divisors (143301).

1140872779 is an equidigital number, since it uses as much as digits as its factorization.

1140872779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143300.

The product of its (nonzero) digits is 197568, while the sum is 46.

The square root of 1140872779 is about 33776.8083009630. The cubic root of 1140872779 is about 1044.9104504203.

The spelling of 1140872779 in words is "one billion, one hundred forty million, eight hundred seventy-two thousand, seven hundred seventy-nine".