139931194 has 32 divisors (see below), whose sum is σ = 232735104. Its totient is φ = 62700480.

The previous prime is 139931189. The next prime is 139931249. The reversal of 139931194 is 491139931.

It is a happy number.

139931194 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 131107 + ... + 132169.

It is an arithmetic number, because the mean of its divisors is an integer number (7272972).

Almost surely, 2^139931194 is an apocalyptic number.

139931194 is a deficient number, since it is larger than the sum of its proper divisors (92803910).

139931194 is a wasteful number, since it uses less digits than its factorization.

139931194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222.

The product of its digits is 26244, while the sum is 40.

The square root of 139931194 is about 11829.2516246802. The cubic root of 139931194 is about 519.1643308291.

The spelling of 139931194 in words is "one hundred thirty-nine million, nine hundred thirty-one thousand, one hundred ninety-four".