139889946723 has 4 divisors (see below), whose sum is σ = 186519928968. Its totient is φ = 93259964480.

The previous prime is 139889946709. The next prime is 139889946767. The reversal of 139889946723 is 327649988931.

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

It is a cyclic number.

It is not a de Polignac number, because 139889946723 - 2¹⁷ = 139889815651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139889946323) 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, 23314991118 + ... + 23314991123.

It is an arithmetic number, because the mean of its divisors is an integer number (46629982242).

Almost surely, 2^139889946723 is an apocalyptic number.

139889946723 is a deficient number, since it is larger than the sum of its proper divisors (46629982245).

139889946723 is an equidigital number, since it uses as much as digits as its factorization.

139889946723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46629982244.

The product of its digits is 141087744, while the sum is 69.

The spelling of 139889946723 in words is "one hundred thirty-nine billion, eight hundred eighty-nine million, nine hundred forty-six thousand, seven hundred twenty-three".