139373293 has 8 divisors (see below), whose sum is σ = 148220280. Its totient is φ = 130598400.

The previous prime is 139373263. The next prime is 139373321. The reversal of 139373293 is 392373931.

It can be written as a sum of positive squares in 4 ways, for example, as 48399849 + 90973444 = 6957^2 + 9538^2 .

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 139373293 - 2¹⁷ = 139242221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139373263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14008 + ... + 21793.

It is an arithmetic number, because the mean of its divisors is an integer number (18527535).

Almost surely, 2^139373293 is an apocalyptic number.

It is an amenable number.

139373293 is a deficient number, since it is larger than the sum of its proper divisors (8846987).

139373293 is a wasteful number, since it uses less digits than its factorization.

139373293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36047.

The product of its digits is 91854, while the sum is 40.

The square root of 139373293 is about 11805.6466574263. The cubic root of 139373293 is about 518.4734482190.

The spelling of 139373293 in words is "one hundred thirty-nine million, three hundred seventy-three thousand, two hundred ninety-three".