140373391 has 2 divisors, whose sum is σ = 140373392. Its totient is φ = 140373390.

The previous prime is 140373341. The next prime is 140373397. The reversal of 140373391 is 193373041.

It is a strong prime.

It is an emirp because it is prime and its reverse (193373041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140373391 is a prime.

It is a pancake number, because a pancake can be divided into 140373391 parts by 16755 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140373397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70186695 + 70186696.

It is an arithmetic number, because the mean of its divisors is an integer number (70186696).

Almost surely, 2^140373391 is an apocalyptic number.

140373391 is a deficient number, since it is larger than the sum of its proper divisors (1).

140373391 is an equidigital number, since it uses as much as digits as its factorization.

140373391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 140373391 is about 11847.9277090975. The cubic root of 140373391 is about 519.7106267193.

The spelling of 140373391 in words is "one hundred forty million, three hundred seventy-three thousand, three hundred ninety-one".