140709947 has 4 divisors (see below), whose sum is σ = 160811376. Its totient is φ = 120608520.

The previous prime is 140709941. The next prime is 140709949. The reversal of 140709947 is 749907041.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140709947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140709941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10050704 + ... + 10050717.

It is an arithmetic number, because the mean of its divisors is an integer number (40202844).

Almost surely, 2^140709947 is an apocalyptic number.

140709947 is a deficient number, since it is larger than the sum of its proper divisors (20101429).

140709947 is an equidigital number, since it uses as much as digits as its factorization.

140709947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20101428.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 140709947 is about 11862.1223649059. The cubic root of 140709947 is about 520.1256439488.

The spelling of 140709947 in words is "one hundred forty million, seven hundred nine thousand, nine hundred forty-seven".