139899170 has 8 divisors (see below), whose sum is σ = 251818524. Its totient is φ = 55959664.

The previous prime is 139899163. The next prime is 139899173. The reversal of 139899170 is 71998931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 137992009 + 1907161 = 11747^2 + 1381^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139899173) 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, 6994949 + ... + 6994968.

Almost surely, 2^139899170 is an apocalyptic number.

139899170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139899170 is a deficient number, since it is larger than the sum of its proper divisors (111919354).

139899170 is a wasteful number, since it uses less digits than its factorization.

139899170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13989924.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 139899170 is about 11827.8979535672. The cubic root of 139899170 is about 519.1247232989.

The spelling of 139899170 in words is "one hundred thirty-nine million, eight hundred ninety-nine thousand, one hundred seventy".