14940631393 has 4 divisors (see below), whose sum is σ = 14951058948. Its totient is φ = 14930203840.

The previous prime is 14940631379. The next prime is 14940631397. The reversal of 14940631393 is 39313604941.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13476191569 + 1464439824 = 116087^2 + 38268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14940631393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14940631397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5211628 + ... + 5214493.

It is an arithmetic number, because the mean of its divisors is an integer number (3737764737).

Almost surely, 2^14940631393 is an apocalyptic number.

It is an amenable number.

14940631393 is a deficient number, since it is larger than the sum of its proper divisors (10427555).

14940631393 is a wasteful number, since it uses less digits than its factorization.

14940631393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10427554.

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 14940631393 in words is "fourteen billion, nine hundred forty million, six hundred thirty-one thousand, three hundred ninety-three".