139947170 has 16 divisors (see below), whose sum is σ = 274805568. Its totient is φ = 50889840.

The previous prime is 139947163. The next prime is 139947173. The reversal of 139947170 is 71749931.

It is not an unprimeable number, because it can be changed into a prime (139947173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636014 + ... + 636233.

It is an arithmetic number, because the mean of its divisors is an integer number (17175348).

Almost surely, 2^139947170 is an apocalyptic number.

139947170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139947170 is a deficient number, since it is larger than the sum of its proper divisors (134858398).

139947170 is a wasteful number, since it uses less digits than its factorization.

139947170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272265.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 139947170 is about 11829.9268805855. The cubic root of 139947170 is about 519.1840878098.

The spelling of 139947170 in words is "one hundred thirty-nine million, nine hundred forty-seven thousand, one hundred seventy".