139589738 has 4 divisors (see below), whose sum is σ = 209384610. Its totient is φ = 69794868.

The previous prime is 139589719. The next prime is 139589741. The reversal of 139589738 is 837985931.

It is a happy number.

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., 83594449 + 55995289 = 9143^2 + 7483^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 139589738.

It is an unprimeable number.

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, 34897433 + ... + 34897436.

Almost surely, 2^139589738 is an apocalyptic number.

139589738 is a deficient number, since it is larger than the sum of its proper divisors (69794872).

139589738 is an equidigital number, since it uses as much as digits as its factorization.

139589738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69794871.

The product of its digits is 1632960, while the sum is 53.

The square root of 139589738 is about 11814.8101127356. The cubic root of 139589738 is about 518.7417036850.

The spelling of 139589738 in words is "one hundred thirty-nine million, five hundred eighty-nine thousand, seven hundred thirty-eight".