192089993 has 4 divisors (see below), whose sum is σ = 192401940. Its totient is φ = 191778048.

The previous prime is 192089959. The next prime is 192090007. The reversal of 192089993 is 399980291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 399980291 = 2287 ⋅174893.

It can be written as a sum of positive squares in 2 ways, for example, as 76247824 + 115842169 = 8732^2 + 10763^2 .

It is a cyclic number.

It is not a de Polignac number, because 192089993 - 2¹² = 192085897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (192089393) 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, 155048 + ... + 156281.

It is an arithmetic number, because the mean of its divisors is an integer number (48100485).

Almost surely, 2^192089993 is an apocalyptic number.

It is an amenable number.

192089993 is a deficient number, since it is larger than the sum of its proper divisors (311947).

192089993 is an equidigital number, since it uses as much as digits as its factorization.

192089993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311946.

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 192089993 is about 13859.6534227952. The cubic root of 192089993 is about 576.9899476316.

The spelling of 192089993 in words is "one hundred ninety-two million, eighty-nine thousand, nine hundred ninety-three".