139400188 has 24 divisors (see below), whose sum is σ = 258249600. Its totient is φ = 65656368.

The previous prime is 139400137. The next prime is 139400197. The reversal of 139400188 is 881004931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8481 + ... + 18727.

It is an arithmetic number, because the mean of its divisors is an integer number (10760400).

Almost surely, 2^139400188 is an apocalyptic number.

It is an amenable number.

139400188 is a deficient number, since it is larger than the sum of its proper divisors (118849412).

139400188 is a wasteful number, since it uses less digits than its factorization.

139400188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10449 (or 10447 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 139400188 is about 11806.7856760424. The cubic root of 139400188 is about 518.5067961827.

The spelling of 139400188 in words is "one hundred thirty-nine million, four hundred thousand, one hundred eighty-eight".