170139049 has 4 divisors (see below), whose sum is σ = 170176336. Its totient is φ = 170101764.

The previous prime is 170139041. The next prime is 170139059. The reversal of 170139049 is 940931071.

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, and also an emirpimes, since its reverse is a distinct semiprime: 940931071 = 29 ⋅32445899.

It is a cyclic number.

It is not a de Polignac number, because 170139049 - 2³ = 170139041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170139041) 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, 10659 + ... + 21304.

It is an arithmetic number, because the mean of its divisors is an integer number (42544084).

Almost surely, 2^170139049 is an apocalyptic number.

It is an amenable number.

170139049 is a deficient number, since it is larger than the sum of its proper divisors (37287).

170139049 is an equidigital number, since it uses as much as digits as its factorization.

170139049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37286.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 170139049 is about 13043.7360062215. The cubic root of 170139049 is about 554.1168205818.

It can be divided in two parts, 17013 and 9049, that added together give a palindrome (26062).

The spelling of 170139049 in words is "one hundred seventy million, one hundred thirty-nine thousand, forty-nine".