139888206 has 24 divisors (see below), whose sum is σ = 320920704. Its totient is φ = 43886400.

The previous prime is 139888201. The next prime is 139888211. The reversal of 139888206 is 602888931.

It is an interprime number because it is at equal distance from previous prime (139888201) and next prime (139888211).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139888201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 228270 + ... + 228881.

It is an arithmetic number, because the mean of its divisors is an integer number (13371696).

Almost surely, 2^139888206 is an apocalyptic number.

139888206 is an abundant number, since it is smaller than the sum of its proper divisors (181032498).

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

139888206 is a wasteful number, since it uses less digits than its factorization.

139888206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457176 (or 457173 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 139888206 is about 11827.4344639909. The cubic root of 139888206 is about 519.1111615502. Note that the first 4 decimals are identical.

The spelling of 139888206 in words is "one hundred thirty-nine million, eight hundred eighty-eight thousand, two hundred six".