139338387 has 12 divisors (see below), whose sum is σ = 208721240. Its totient is φ = 92892096.

The previous prime is 139338373. The next prime is 139338391. The reversal of 139338387 is 783833931.

It is not a de Polignac number, because 139338387 - 2⁴ = 139338371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139338587) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 286462 + ... + 286947.

Almost surely, 2^139338387 is an apocalyptic number.

139338387 is a deficient number, since it is larger than the sum of its proper divisors (69382853).

139338387 is an frugal number, since it uses more digits than its factorization.

139338387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573424 (or 573412 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 139338387 is about 11804.1682044945. The cubic root of 139338387 is about 518.4301607645.

The spelling of 139338387 in words is "one hundred thirty-nine million, three hundred thirty-eight thousand, three hundred eighty-seven".