1139272823 has 8 divisors (see below), whose sum is σ = 1280253408. Its totient is φ = 1005912864.

The previous prime is 1139272819. The next prime is 1139272843. The reversal of 1139272823 is 3282729311.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1139272823 - 2² = 1139272819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139272843) 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, 1904840 + ... + 1905437.

It is an arithmetic number, because the mean of its divisors is an integer number (160031676).

Almost surely, 2^1139272823 is an apocalyptic number.

1139272823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1139272823 is a deficient number, since it is larger than the sum of its proper divisors (140980585).

1139272823 is a wasteful number, since it uses less digits than its factorization.

1139272823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3810313.

The product of its digits is 36288, while the sum is 38.

The square root of 1139272823 is about 33753.1157524754. The cubic root of 1139272823 is about 1044.4217623157.

The spelling of 1139272823 in words is "one billion, one hundred thirty-nine million, two hundred seventy-two thousand, eight hundred twenty-three".