139883393 has 4 divisors (see below), whose sum is σ = 150643668. Its totient is φ = 129123120.

The previous prime is 139883383. The next prime is 139883413. The reversal of 139883393 is 393388931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 51955264 + 87928129 = 7208^2 + 9377^2 .

It is a cyclic number.

It is not a de Polignac number, because 139883393 - 2⁶ = 139883329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (139883333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5380118 + ... + 5380143.

It is an arithmetic number, because the mean of its divisors is an integer number (37660917).

Almost surely, 2^139883393 is an apocalyptic number.

139883393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

139883393 is a deficient number, since it is larger than the sum of its proper divisors (10760275).

139883393 is a wasteful number, since it uses less digits than its factorization.

139883393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10760274.

The product of its digits is 419904, while the sum is 47.

The square root of 139883393 is about 11827.2309946158. The cubic root of 139883393 is about 519.1052079611.

The spelling of 139883393 in words is "one hundred thirty-nine million, eight hundred eighty-three thousand, three hundred ninety-three".