139398194 has 16 divisors (see below), whose sum is σ = 225536640. Its totient is φ = 64236240.

The previous prime is 139398191. The next prime is 139398197. The reversal of 139398194 is 491893931.

It is an interprime number because it is at equal distance from previous prime (139398191) and next prime (139398197).

It is not an unprimeable number, because it can be changed into a prime (139398191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14087 + ... + 21845.

It is an arithmetic number, because the mean of its divisors is an integer number (14096040).

Almost surely, 2^139398194 is an apocalyptic number.

139398194 is a deficient number, since it is larger than the sum of its proper divisors (86138446).

139398194 is a wasteful number, since it uses less digits than its factorization.

139398194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8465.

The product of its digits is 209952, while the sum is 47.

The square root of 139398194 is about 11806.7012327745. The cubic root of 139398194 is about 518.5043239061.

The spelling of 139398194 in words is "one hundred thirty-nine million, three hundred ninety-eight thousand, one hundred ninety-four".