139170620 has 24 divisors (see below), whose sum is σ = 294994224. Its totient is φ = 55147136.

The previous prime is 139170607. The next prime is 139170641. The reversal of 139170620 is 26071931.

139170620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139170620² = 38736922942368800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 30377 + ... + 34656.

It is an arithmetic number, because the mean of its divisors is an integer number (12291426).

Almost surely, 2^139170620 is an apocalyptic number.

139170620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139170620 is an abundant number, since it is smaller than the sum of its proper divisors (155823604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139170620 is a wasteful number, since it uses less digits than its factorization.

139170620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65149 (or 65147 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 139170620 is about 11797.0598031883. The cubic root of 139170620 is about 518.2220094552. Note that the first 3 decimals are identical.

The spelling of 139170620 in words is "one hundred thirty-nine million, one hundred seventy thousand, six hundred twenty".