140297905889 has 2 divisors, whose sum is σ = 140297905890. Its totient is φ = 140297905888.

The previous prime is 140297905843. The next prime is 140297905921. The reversal of 140297905889 is 988509792041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121667020864 + 18630885025 = 348808^2 + 136495^2 .

It is a cyclic number.

It is not a de Polignac number, because 140297905889 - 2⁸ = 140297905633 is a prime.

It is not a weakly prime, because it can be changed into another prime (140297905819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70148952944 + 70148952945.

It is an arithmetic number, because the mean of its divisors is an integer number (70148952945).

Almost surely, 2^140297905889 is an apocalyptic number.

It is an amenable number.

140297905889 is a deficient number, since it is larger than the sum of its proper divisors (1).

140297905889 is an equidigital number, since it uses as much as digits as its factorization.

140297905889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 62.

The spelling of 140297905889 in words is "one hundred forty billion, two hundred ninety-seven million, nine hundred five thousand, eight hundred eighty-nine".