139848538 has 8 divisors (see below), whose sum is σ = 209859732. Its totient is φ = 69895296.

The previous prime is 139848473. The next prime is 139848557. The reversal of 139848538 is 835848931.

It can be written as a sum of positive squares in 2 ways, for example, as 136726249 + 3122289 = 11693^2 + 1767^2 .

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

It is a super-2 number, since 2×139848538² = 39115227161474888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139848491 and 139848500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7845 + ... + 18472.

Almost surely, 2^139848538 is an apocalyptic number.

139848538 is a deficient number, since it is larger than the sum of its proper divisors (70011194).

139848538 is a wasteful number, since it uses less digits than its factorization.

139848538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28976.

The product of its digits is 829440, while the sum is 49.

The square root of 139848538 is about 11825.7573964630. The cubic root of 139848538 is about 519.0620889160.

It can be divided in two parts, 13984 and 8538, that added together give a palindrome (22522).

The spelling of 139848538 in words is "one hundred thirty-nine million, eight hundred forty-eight thousand, five hundred thirty-eight".