139373093 has 8 divisors (see below), whose sum is σ = 142241400. Its totient is φ = 136513728.

The previous prime is 139373083. The next prime is 139373107. The reversal of 139373093 is 390373931.

It can be written as a sum of positive squares in 4 ways, for example, as 4418404 + 134954689 = 2102^2 + 11617^2 .

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 139373093 - 2⁶ = 139373029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139373083) 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, 35723 + ... + 39431.

It is an arithmetic number, because the mean of its divisors is an integer number (17780175).

Almost surely, 2^139373093 is an apocalyptic number.

It is an amenable number.

139373093 is a deficient number, since it is larger than the sum of its proper divisors (2868307).

139373093 is an equidigital number, since it uses as much as digits as its factorization.

139373093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4471.

The product of its (nonzero) digits is 45927, while the sum is 38.

The square root of 139373093 is about 11805.6381869004. The cubic root of 139373093 is about 518.4732002166.

The spelling of 139373093 in words is "one hundred thirty-nine million, three hundred seventy-three thousand, ninety-three".