814772139 has 8 divisors (see below), whose sum is σ = 1123823760. Its totient is φ = 524450976.

The previous prime is 814772137. The next prime is 814772143. The reversal of 814772139 is 931277418.

814772139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 814772139 - 2¹ = 814772137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 814772139.

It is not an unprimeable number, because it can be changed into a prime (814772137) 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, 4682512 + ... + 4682685.

It is an arithmetic number, because the mean of its divisors is an integer number (140477970).

Almost surely, 2^814772139 is an apocalyptic number.

814772139 is a deficient number, since it is larger than the sum of its proper divisors (309051621).

814772139 is a wasteful number, since it uses less digits than its factorization.

814772139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9365229.

The product of its digits is 84672, while the sum is 42.

The square root of 814772139 is about 28544.2137569070. The cubic root of 814772139 is about 933.9968036640.

The spelling of 814772139 in words is "eight hundred fourteen million, seven hundred seventy-two thousand, one hundred thirty-nine".