139958193 has 4 divisors (see below), whose sum is σ = 186610928. Its totient is φ = 93305460.

The previous prime is 139958183. The next prime is 139958209. The reversal of 139958193 is 391859931.

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 not a de Polignac number, because 139958193 - 2⁴ = 139958177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139958113) 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, 23326363 + ... + 23326368.

It is an arithmetic number, because the mean of its divisors is an integer number (46652732).

Almost surely, 2^139958193 is an apocalyptic number.

It is an amenable number.

139958193 is a deficient number, since it is larger than the sum of its proper divisors (46652735).

139958193 is an equidigital number, since it uses as much as digits as its factorization.

139958193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46652734.

The product of its digits is 262440, while the sum is 48.

The square root of 139958193 is about 11830.3927660919. The cubic root of 139958193 is about 519.1977187058.

The spelling of 139958193 in words is "one hundred thirty-nine million, nine hundred fifty-eight thousand, one hundred ninety-three".