139464440953 has 4 divisors (see below), whose sum is σ = 139731103888. Its totient is φ = 139197778020.

The previous prime is 139464440917. The next prime is 139464440977. The reversal of 139464440953 is 359044464931.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139464440953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139464440953.

It is not an unprimeable number, because it can be changed into a prime (139464440903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133330683 + ... + 133331728.

It is an arithmetic number, because the mean of its divisors is an integer number (34932775972).

Almost surely, 2^139464440953 is an apocalyptic number.

It is an amenable number.

139464440953 is a deficient number, since it is larger than the sum of its proper divisors (266662935).

139464440953 is an equidigital number, since it uses as much as digits as its factorization.

139464440953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266662934.

The product of its (nonzero) digits is 5598720, while the sum is 52.

The spelling of 139464440953 in words is "one hundred thirty-nine billion, four hundred sixty-four million, four hundred forty thousand, nine hundred fifty-three".