140835997 has 2 divisors, whose sum is σ = 140835998. Its totient is φ = 140835996.

The previous prime is 140835971. The next prime is 140836001. The reversal of 140835997 is 799538041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121572676 + 19263321 = 11026^2 + 4389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140835997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140835967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70417998 + 70417999.

It is an arithmetic number, because the mean of its divisors is an integer number (70417999).

Almost surely, 2^140835997 is an apocalyptic number.

It is an amenable number.

140835997 is a deficient number, since it is larger than the sum of its proper divisors (1).

140835997 is an equidigital number, since it uses as much as digits as its factorization.

140835997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 140835997 is about 11867.4343056956. The cubic root of 140835997 is about 520.2809096128.

The spelling of 140835997 in words is "one hundred forty million, eight hundred thirty-five thousand, nine hundred ninety-seven".