140275897 has 2 divisors, whose sum is σ = 140275898. Its totient is φ = 140275896.

The previous prime is 140275867. The next prime is 140275903. The reversal of 140275897 is 798572041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131537961 + 8737936 = 11469^2 + 2956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140275897 is a prime.

It is not a weakly prime, because it can be changed into another prime (140275867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70137948 + 70137949.

It is an arithmetic number, because the mean of its divisors is an integer number (70137949).

Almost surely, 2^140275897 is an apocalyptic number.

It is an amenable number.

140275897 is a deficient number, since it is larger than the sum of its proper divisors (1).

140275897 is an equidigital number, since it uses as much as digits as its factorization.

140275897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 140275897 is about 11843.8126040562. The cubic root of 140275897 is about 519.5902800677.

The spelling of 140275897 in words is "one hundred forty million, two hundred seventy-five thousand, eight hundred ninety-seven".