139745373 has 4 divisors (see below), whose sum is σ = 186327168. Its totient is φ = 93163580.

The previous prime is 139745369. The next prime is 139745377. The reversal of 139745373 is 373547931.

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 an interprime number because it is at equal distance from previous prime (139745369) and next prime (139745377).

It is a cyclic number.

It is not a de Polignac number, because 139745373 - 2² = 139745369 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139745377) 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, 23290893 + ... + 23290898.

It is an arithmetic number, because the mean of its divisors is an integer number (46581792).

Almost surely, 2^139745373 is an apocalyptic number.

It is an amenable number.

139745373 is a deficient number, since it is larger than the sum of its proper divisors (46581795).

139745373 is an equidigital number, since it uses as much as digits as its factorization.

139745373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46581794.

The product of its digits is 238140, while the sum is 42.

The square root of 139745373 is about 11821.3947146688. The cubic root of 139745373 is about 518.9344217171.

The spelling of 139745373 in words is "one hundred thirty-nine million, seven hundred forty-five thousand, three hundred seventy-three".