7691139 has 8 divisors (see below), whose sum is σ = 11394320. Its totient is φ = 5127408.

The previous prime is 7691137. The next prime is 7691147. The reversal of 7691139 is 9311967.

It is not a de Polignac number, because 7691139 - 2¹ = 7691137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7691137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142402 + ... + 142455.

It is an arithmetic number, because the mean of its divisors is an integer number (1424290).

Almost surely, 2^7691139 is an apocalyptic number.

7691139 is a deficient number, since it is larger than the sum of its proper divisors (3703181).

7691139 is a wasteful number, since it uses less digits than its factorization.

7691139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284866 (or 284860 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 7691139 is about 2773.2902841210. The cubic root of 7691139 is about 197.3923057579.

The spelling of 7691139 in words is "seven million, six hundred ninety-one thousand, one hundred thirty-nine".