140946709 has 4 divisors (see below), whose sum is σ = 140983200. Its totient is φ = 140910220.

The previous prime is 140946703. The next prime is 140946763. The reversal of 140946709 is 907649041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 907649041 = 13 ⋅69819157.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140946709 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140946703) 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, 11659 + ... + 20440.

It is an arithmetic number, because the mean of its divisors is an integer number (35245800).

Almost surely, 2^140946709 is an apocalyptic number.

It is an amenable number.

140946709 is a deficient number, since it is larger than the sum of its proper divisors (36491).

140946709 is an equidigital number, since it uses as much as digits as its factorization.

140946709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36490.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 140946709 is about 11872.0979190706. The cubic root of 140946709 is about 520.4172058588.

The spelling of 140946709 in words is "one hundred forty million, nine hundred forty-six thousand, seven hundred nine".