139845206 has 32 divisors (see below), whose sum is σ = 226195200. Its totient is φ = 64648800.

The previous prime is 139845197. The next prime is 139845229. The reversal of 139845206 is 602548931.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 139845206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318335 + ... + 318773.

It is an arithmetic number, because the mean of its divisors is an integer number (7068600).

Almost surely, 2^139845206 is an apocalyptic number.

139845206 is a deficient number, since it is larger than the sum of its proper divisors (86349994).

139845206 is a wasteful number, since it uses less digits than its factorization.

139845206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 139845206 is about 11825.6165166980. The cubic root of 139845206 is about 519.0579665308.

The spelling of 139845206 in words is "one hundred thirty-nine million, eight hundred forty-five thousand, two hundred six".