1139854115 has 4 divisors (see below), whose sum is σ = 1367824944. Its totient is φ = 911883288.

The previous prime is 1139854109. The next prime is 1139854117. The reversal of 1139854115 is 5114589311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5114589311 = 13 ⋅393429947.

It is a cyclic number.

It is not a de Polignac number, because 1139854115 - 2¹⁴ = 1139837731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139854117) 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, 113985407 + ... + 113985416.

It is an arithmetic number, because the mean of its divisors is an integer number (341956236).

Almost surely, 2^1139854115 is an apocalyptic number.

1139854115 is a deficient number, since it is larger than the sum of its proper divisors (227970829).

1139854115 is an equidigital number, since it uses as much as digits as its factorization.

1139854115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227970828.

The product of its digits is 21600, while the sum is 38.

The square root of 1139854115 is about 33761.7255927478. The cubic root of 1139854115 is about 1044.5993641380.

The spelling of 1139854115 in words is "one billion, one hundred thirty-nine million, eight hundred fifty-four thousand, one hundred fifteen".