139616093 has 4 divisors (see below), whose sum is σ = 139662048. Its totient is φ = 139570140.

The previous prime is 139616051. The next prime is 139616107. The reversal of 139616093 is 390616931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139616093 - 2¹⁴ = 139599709 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 (139616023) 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, 18071 + ... + 24612.

It is an arithmetic number, because the mean of its divisors is an integer number (34915512).

Almost surely, 2^139616093 is an apocalyptic number.

It is an amenable number.

139616093 is a deficient number, since it is larger than the sum of its proper divisors (45955).

139616093 is an equidigital number, since it uses as much as digits as its factorization.

139616093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45954.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 139616093 is about 11815.9253975302. The cubic root of 139616093 is about 518.7743483418.

The spelling of 139616093 in words is "one hundred thirty-nine million, six hundred sixteen thousand, ninety-three".