1139921107 has 4 divisors (see below), whose sum is σ = 1227607360. Its totient is φ = 1052234856.

The previous prime is 1139921063. The next prime is 1139921137. The reversal of 1139921107 is 7011299311.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1139921107 - 2¹⁵ = 1139888339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139921137) 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, 43843107 + ... + 43843132.

It is an arithmetic number, because the mean of its divisors is an integer number (306901840).

Almost surely, 2^1139921107 is an apocalyptic number.

1139921107 is a deficient number, since it is larger than the sum of its proper divisors (87686253).

1139921107 is an equidigital number, since it uses as much as digits as its factorization.

1139921107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87686252.

The product of its (nonzero) digits is 3402, while the sum is 34.

The square root of 1139921107 is about 33762.7177075543. The cubic root of 1139921107 is about 1044.6198282859.

The spelling of 1139921107 in words is "one billion, one hundred thirty-nine million, nine hundred twenty-one thousand, one hundred seven".