139723787443 has 4 divisors (see below), whose sum is σ = 139820886720. Its totient is φ = 139626688168.

The previous prime is 139723787377. The next prime is 139723787453. The reversal of 139723787443 is 344787327931.

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-139723787443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139723787453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48547480 + ... + 48550357.

It is an arithmetic number, because the mean of its divisors is an integer number (34955221680).

Almost surely, 2^139723787443 is an apocalyptic number.

139723787443 is a deficient number, since it is larger than the sum of its proper divisors (97099277).

139723787443 is an equidigital number, since it uses as much as digits as its factorization.

139723787443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97099276.

The product of its digits is 21337344, while the sum is 58.

The spelling of 139723787443 in words is "one hundred thirty-nine billion, seven hundred twenty-three million, seven hundred eighty-seven thousand, four hundred forty-three".