139873353 has 4 divisors (see below), whose sum is σ = 186497808. Its totient is φ = 93248900.

The previous prime is 139873339. The next prime is 139873403. The reversal of 139873353 is 353378931.

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 not a de Polignac number, because 139873353 - 2⁹ = 139872841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139873313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23312223 + ... + 23312228.

It is an arithmetic number, because the mean of its divisors is an integer number (46624452).

Almost surely, 2^139873353 is an apocalyptic number.

It is an amenable number.

139873353 is a deficient number, since it is larger than the sum of its proper divisors (46624455).

139873353 is an equidigital number, since it uses as much as digits as its factorization.

139873353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46624454.

The product of its digits is 204120, while the sum is 42.

The square root of 139873353 is about 11826.8065427655. The cubic root of 139873353 is about 519.0927882333.

The spelling of 139873353 in words is "one hundred thirty-nine million, eight hundred seventy-three thousand, three hundred fifty-three".