139343933 has 8 divisors (see below), whose sum is σ = 142294008. Its totient is φ = 136422144.

The previous prime is 139343921. The next prime is 139343957. The reversal of 139343933 is 339343931.

It can be written as a sum of positive squares in 4 ways, for example, as 76965529 + 62378404 = 8773^2 + 7898^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 139343933 - 2²⁶ = 72235069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139343903) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3035 + ... + 16967.

It is an arithmetic number, because the mean of its divisors is an integer number (17786751).

Almost surely, 2^139343933 is an apocalyptic number.

It is an amenable number.

139343933 is a deficient number, since it is larger than the sum of its proper divisors (2950075).

139343933 is a wasteful number, since it uses less digits than its factorization.

139343933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14143.

The product of its digits is 78732, while the sum is 38.

The square root of 139343933 is about 11804.4031191755. The cubic root of 139343933 is about 518.4370389254.

The spelling of 139343933 in words is "one hundred thirty-nine million, three hundred forty-three thousand, nine hundred thirty-three".