139930193 has 16 divisors (see below), whose sum is σ = 159136320. Its totient is φ = 121974336.

The previous prime is 139930181. The next prime is 139930223. The reversal of 139930193 is 391039931.

It is a cyclic number.

It is not a de Polignac number, because 139930193 - 2⁴ = 139930177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139930393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97346 + ... + 98772.

It is an arithmetic number, because the mean of its divisors is an integer number (9946020).

Almost surely, 2^139930193 is an apocalyptic number.

139930193 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

139930193 is a deficient number, since it is larger than the sum of its proper divisors (19206127).

139930193 is a wasteful number, since it uses less digits than its factorization.

139930193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856.

The product of its (nonzero) digits is 19683, while the sum is 38.

The square root of 139930193 is about 11829.2093142357. The cubic root of 139930193 is about 519.1630928761.

The spelling of 139930193 in words is "one hundred thirty-nine million, nine hundred thirty thousand, one hundred ninety-three".