140988977 has 2 divisors, whose sum is σ = 140988978. Its totient is φ = 140988976.

The previous prime is 140988941. The next prime is 140989001. The reversal of 140988977 is 779889041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105657841 + 35331136 = 10279^2 + 5944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140988977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140988917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70494488 + 70494489.

It is an arithmetic number, because the mean of its divisors is an integer number (70494489).

Almost surely, 2^140988977 is an apocalyptic number.

It is an amenable number.

140988977 is a deficient number, since it is larger than the sum of its proper divisors (1).

140988977 is an equidigital number, since it uses as much as digits as its factorization.

140988977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 140988977 is about 11873.8779259347. The cubic root of 140988977 is about 520.4692226721.

The spelling of 140988977 in words is "one hundred forty million, nine hundred eighty-eight thousand, nine hundred seventy-seven".