140930609 has 2 divisors, whose sum is σ = 140930610. Its totient is φ = 140930608.

The previous prime is 140930599. The next prime is 140930617. The reversal of 140930609 is 906039041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123832384 + 17098225 = 11128^2 + 4135^2 .

It is an emirp because it is prime and its reverse (906039041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140930609 - 2¹⁶ = 140865073 is a prime.

It is a super-2 number, since 2×140930609² = 39722873106221762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140930639) 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, 70465304 + 70465305.

It is an arithmetic number, because the mean of its divisors is an integer number (70465305).

Almost surely, 2^140930609 is an apocalyptic number.

It is an amenable number.

140930609 is a deficient number, since it is larger than the sum of its proper divisors (1).

140930609 is an equidigital number, since it uses as much as digits as its factorization.

140930609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 140930609 is about 11871.4198392610. The cubic root of 140930609 is about 520.3973897734.

The spelling of 140930609 in words is "one hundred forty million, nine hundred thirty thousand, six hundred nine".