139686094 has 4 divisors (see below), whose sum is σ = 209529144. Its totient is φ = 69843046.

The previous prime is 139686091. The next prime is 139686097. The reversal of 139686094 is 490686931.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (139686091) and next prime (139686097).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139686091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34921522 + ... + 34921525.

It is an arithmetic number, because the mean of its divisors is an integer number (52382286).

Almost surely, 2^139686094 is an apocalyptic number.

139686094 is a deficient number, since it is larger than the sum of its proper divisors (69843050).

139686094 is an equidigital number, since it uses as much as digits as its factorization.

139686094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69843049.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 139686094 is about 11818.8871726572. The cubic root of 139686094 is about 518.8610352342.

The spelling of 139686094 in words is "one hundred thirty-nine million, six hundred eighty-six thousand, ninety-four".