140999657 has 2 divisors, whose sum is σ = 140999658. Its totient is φ = 140999656.

The previous prime is 140999647. The next prime is 140999669. The reversal of 140999657 is 756999041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127486681 + 13512976 = 11291^2 + 3676^2 .

It is a cyclic number.

It is not a de Polignac number, because 140999657 - 2⁴ = 140999641 is a prime.

It is not a weakly prime, because it can be changed into another prime (140999647) 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, 70499828 + 70499829.

It is an arithmetic number, because the mean of its divisors is an integer number (70499829).

Almost surely, 2^140999657 is an apocalyptic number.

It is an amenable number.

140999657 is a deficient number, since it is larger than the sum of its proper divisors (1).

140999657 is an equidigital number, since it uses as much as digits as its factorization.

140999657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 140999657 is about 11874.3276441237. The cubic root of 140999657 is about 520.4823642928.

The spelling of 140999657 in words is "one hundred forty million, nine hundred ninety-nine thousand, six hundred fifty-seven".