140079791 has 2 divisors, whose sum is σ = 140079792. Its totient is φ = 140079790.

The previous prime is 140079749. The next prime is 140079803. The reversal of 140079791 is 197970041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140079791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140079391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70039895 + 70039896.

It is an arithmetic number, because the mean of its divisors is an integer number (70039896).

Almost surely, 2^140079791 is an apocalyptic number.

140079791 is a deficient number, since it is larger than the sum of its proper divisors (1).

140079791 is an equidigital number, since it uses as much as digits as its factorization.

140079791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 38.

The square root of 140079791 is about 11835.5308710678. The cubic root of 140079791 is about 519.3480377115.

The spelling of 140079791 in words is "one hundred forty million, seventy-nine thousand, seven hundred ninety-one".