193933389 has 8 divisors (see below), whose sum is σ = 278468512. Its totient is φ = 119343600.

The previous prime is 193933381. The next prime is 193933409. The reversal of 193933389 is 983339391.

193933389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 193933389 - 2³ = 193933381 is a prime.

It is a super-2 number, since 2×193933389² = 75220318738050642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193933381) 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, 2486287 + ... + 2486364.

It is an arithmetic number, because the mean of its divisors is an integer number (34808564).

Almost surely, 2^193933389 is an apocalyptic number.

It is an amenable number.

193933389 is a deficient number, since it is larger than the sum of its proper divisors (84535123).

193933389 is a wasteful number, since it uses less digits than its factorization.

193933389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972667.

The product of its digits is 472392, while the sum is 48.

The square root of 193933389 is about 13925.9968763461. The cubic root of 193933389 is about 578.8297738761.

The spelling of 193933389 in words is "one hundred ninety-three million, nine hundred thirty-three thousand, three hundred eighty-nine".