139219594 has 4 divisors (see below), whose sum is σ = 208829394. Its totient is φ = 69609796.

The previous prime is 139219571. The next prime is 139219601. The reversal of 139219594 is 495912931.

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

It can be written as a sum of positive squares in only one way, i.e., 138933369 + 286225 = 11787^2 + 535^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 139219594.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34804897 + ... + 34804900.

Almost surely, 2^139219594 is an apocalyptic number.

139219594 is a deficient number, since it is larger than the sum of its proper divisors (69609800).

139219594 is an equidigital number, since it uses as much as digits as its factorization.

139219594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69609799.

The product of its digits is 87480, while the sum is 43.

The square root of 139219594 is about 11799.1353073011. The cubic root of 139219594 is about 518.2827895928.

The spelling of 139219594 in words is "one hundred thirty-nine million, two hundred nineteen thousand, five hundred ninety-four".