140868977 has 2 divisors, whose sum is σ = 140868978. Its totient is φ = 140868976.

The previous prime is 140868971. The next prime is 140869051. The reversal of 140868977 is 779868041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133079296 + 7789681 = 11536^2 + 2791^2 .

It is an emirp because it is prime and its reverse (779868041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140868977 - 2⁴ = 140868961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140868971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70434488 + 70434489.

It is an arithmetic number, because the mean of its divisors is an integer number (70434489).

Almost surely, 2^140868977 is an apocalyptic number.

It is an amenable number.

140868977 is a deficient number, since it is larger than the sum of its proper divisors (1).

140868977 is an equidigital number, since it uses as much as digits as its factorization.

140868977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 140868977 is about 11868.8237412138. The cubic root of 140868977 is about 520.3215183718.

The spelling of 140868977 in words is "one hundred forty million, eight hundred sixty-eight thousand, nine hundred seventy-seven".