7772107139 has 4 divisors (see below), whose sum is σ = 7805464056. Its totient is φ = 7738750224.

The previous prime is 7772107129. The next prime is 7772107151. The reversal of 7772107139 is 9317012777.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7772107139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7772107139.

It is not an unprimeable number, because it can be changed into a prime (7772107129) 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, 16678109 + ... + 16678574.

It is an arithmetic number, because the mean of its divisors is an integer number (1951366014).

Almost surely, 2^7772107139 is an apocalyptic number.

7772107139 is a deficient number, since it is larger than the sum of its proper divisors (33356917).

7772107139 is a wasteful number, since it uses less digits than its factorization.

7772107139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33356916.

The product of its (nonzero) digits is 129654, while the sum is 44.

The square root of 7772107139 is about 88159.5550068170. Note that the first 3 decimals coincide. The cubic root of 7772107139 is about 1980.8256886009.

The spelling of 7772107139 in words is "seven billion, seven hundred seventy-two million, one hundred seven thousand, one hundred thirty-nine".