139372738 has 4 divisors (see below), whose sum is σ = 209059110. Its totient is φ = 69686368.

The previous prime is 139372729. The next prime is 139372769. The reversal of 139372738 is 837273931.

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., 101143249 + 38229489 = 10057^2 + 6183^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139372694 and 139372703.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34843183 + ... + 34843186.

Almost surely, 2^139372738 is an apocalyptic number.

139372738 is a deficient number, since it is larger than the sum of its proper divisors (69686372).

139372738 is an equidigital number, since it uses as much as digits as its factorization.

139372738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69686371.

The product of its digits is 190512, while the sum is 43.

The square root of 139372738 is about 11805.6231517019. The cubic root of 139372738 is about 518.4727600118.

The spelling of 139372738 in words is "one hundred thirty-nine million, three hundred seventy-two thousand, seven hundred thirty-eight".