140970091 has 2 divisors, whose sum is σ = 140970092. Its totient is φ = 140970090.

The previous prime is 140970079. The next prime is 140970097. The reversal of 140970091 is 190079041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140970091 - 2¹⁹ = 140445803 is a prime.

It is not a weakly prime, because it can be changed into another prime (140970097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70485045 + 70485046.

It is an arithmetic number, because the mean of its divisors is an integer number (70485046).

Almost surely, 2^140970091 is an apocalyptic number.

140970091 is a deficient number, since it is larger than the sum of its proper divisors (1).

140970091 is an equidigital number, since it uses as much as digits as its factorization.

140970091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 140970091 is about 11873.0826241545. The cubic root of 140970091 is about 520.4459820357.

The spelling of 140970091 in words is "one hundred forty million, nine hundred seventy thousand, ninety-one".