139044273 has 8 divisors (see below), whose sum is σ = 186620736. Its totient is φ = 92082000.

The previous prime is 139044271. The next prime is 139044293. The reversal of 139044273 is 372440931.

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

It is not a de Polignac number, because 139044273 - 2¹ = 139044271 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (139044271) 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, 153018 + ... + 153923.

It is an arithmetic number, because the mean of its divisors is an integer number (23327592).

Almost surely, 2^139044273 is an apocalyptic number.

It is an amenable number.

139044273 is a deficient number, since it is larger than the sum of its proper divisors (47576463).

139044273 is a wasteful number, since it uses less digits than its factorization.

139044273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307095.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 139044273 is about 11791.7035664911. The cubic root of 139044273 is about 518.0651381739.

The spelling of 139044273 in words is "one hundred thirty-nine million, forty-four thousand, two hundred seventy-three".