1139216971 has 8 divisors (see below), whose sum is σ = 1206537984. Its totient is φ = 1071930240.

The previous prime is 1139216941. The next prime is 1139216987. The reversal of 1139216971 is 1796129311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1139216971 - 2⁷ = 1139216843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139216921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97366 + ... + 108436.

It is an arithmetic number, because the mean of its divisors is an integer number (150817248).

Almost surely, 2^1139216971 is an apocalyptic number.

1139216971 is a deficient number, since it is larger than the sum of its proper divisors (67321013).

1139216971 is a wasteful number, since it uses less digits than its factorization.

1139216971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17141.

The product of its digits is 20412, while the sum is 40.

The square root of 1139216971 is about 33752.2883816787. The cubic root of 1139216971 is about 1044.4046947043.

The spelling of 1139216971 in words is "one billion, one hundred thirty-nine million, two hundred sixteen thousand, nine hundred seventy-one".