140897951 has 2 divisors, whose sum is σ = 140897952. Its totient is φ = 140897950.

The previous prime is 140897927. The next prime is 140898041. The reversal of 140897951 is 159798041.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140897951 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140897551) 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, 70448975 + 70448976.

It is an arithmetic number, because the mean of its divisors is an integer number (70448976).

Almost surely, 2^140897951 is an apocalyptic number.

140897951 is a deficient number, since it is larger than the sum of its proper divisors (1).

140897951 is an equidigital number, since it uses as much as digits as its factorization.

140897951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 140897951 is about 11870.0442711896. The cubic root of 140897951 is about 520.3571892544.

The spelling of 140897951 in words is "one hundred forty million, eight hundred ninety-seven thousand, nine hundred fifty-one".