140592391 has 2 divisors, whose sum is σ = 140592392. Its totient is φ = 140592390.

The previous prime is 140592383. The next prime is 140592407. The reversal of 140592391 is 193295041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140592391 - 2³ = 140592383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140592301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70296195 + 70296196.

It is an arithmetic number, because the mean of its divisors is an integer number (70296196).

Almost surely, 2^140592391 is an apocalyptic number.

140592391 is a deficient number, since it is larger than the sum of its proper divisors (1).

140592391 is an equidigital number, since it uses as much as digits as its factorization.

140592391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 140592391 is about 11857.1662297532. The cubic root of 140592391 is about 519.9807574240.

The spelling of 140592391 in words is "one hundred forty million, five hundred ninety-two thousand, three hundred ninety-one".