139473349 has 8 divisors (see below), whose sum is σ = 143180352. Its totient is φ = 135780960.

The previous prime is 139473317. The next prime is 139473353. The reversal of 139473349 is 943374931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139473349 - 2⁵ = 139473317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139473149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17242 + ... + 24004.

It is an arithmetic number, because the mean of its divisors is an integer number (17897544).

Almost surely, 2^139473349 is an apocalyptic number.

It is an amenable number.

139473349 is a deficient number, since it is larger than the sum of its proper divisors (3707003).

139473349 is an equidigital number, since it uses as much as digits as its factorization.

139473349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7307.

The product of its digits is 244944, while the sum is 43.

The square root of 139473349 is about 11809.8835303317. The cubic root of 139473349 is about 518.5974891290.

The spelling of 139473349 in words is "one hundred thirty-nine million, four hundred seventy-three thousand, three hundred forty-nine".