140909259 has 4 divisors (see below), whose sum is σ = 187879016. Its totient is φ = 93939504.

The previous prime is 140909239. The next prime is 140909261. The reversal of 140909259 is 952909041.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 140909259 - 2⁸ = 140909003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140909239) 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 in 3 ways as a sum of consecutive naturals, for example, 23484874 + ... + 23484879.

It is an arithmetic number, because the mean of its divisors is an integer number (46969754).

Almost surely, 2^140909259 is an apocalyptic number.

140909259 is a deficient number, since it is larger than the sum of its proper divisors (46969757).

140909259 is an equidigital number, since it uses as much as digits as its factorization.

140909259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46969756.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 140909259 is about 11870.5205867308. The cubic root of 140909259 is about 520.3711095933.

The spelling of 140909259 in words is "one hundred forty million, nine hundred nine thousand, two hundred fifty-nine".