140915279 has 2 divisors, whose sum is σ = 140915280. Its totient is φ = 140915278.

The previous prime is 140915251. The next prime is 140915303. The reversal of 140915279 is 972519041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140915279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140915209) 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 as a sum of consecutive naturals, namely, 70457639 + 70457640.

It is an arithmetic number, because the mean of its divisors is an integer number (70457640).

Almost surely, 2^140915279 is an apocalyptic number.

140915279 is a deficient number, since it is larger than the sum of its proper divisors (1).

140915279 is an equidigital number, since it uses as much as digits as its factorization.

140915279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 140915279 is about 11870.7741533566. The cubic root of 140915279 is about 520.3785200111.

The spelling of 140915279 in words is "one hundred forty million, nine hundred fifteen thousand, two hundred seventy-nine".