139831694 has 8 divisors (see below), whose sum is σ = 210029088. Its totient is φ = 69822000.

The previous prime is 139831693. The next prime is 139831733. The reversal of 139831694 is 496138931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139831691) 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 in 3 ways as a sum of consecutive naturals, for example, 45047 + ... + 48050.

It is an arithmetic number, because the mean of its divisors is an integer number (26253636).

Almost surely, 2^139831694 is an apocalyptic number.

139831694 is a deficient number, since it is larger than the sum of its proper divisors (70197394).

139831694 is an equidigital number, since it uses as much as digits as its factorization.

139831694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93850.

The product of its digits is 139968, while the sum is 44.

The square root of 139831694 is about 11825.0452007593. The cubic root of 139831694 is about 519.0412486722.

The spelling of 139831694 in words is "one hundred thirty-nine million, eight hundred thirty-one thousand, six hundred ninety-four".