18234399 has 8 divisors (see below), whose sum is σ = 24548992. Its totient is φ = 12038040.

The previous prime is 18234383. The next prime is 18234427. The reversal of 18234399 is 99343281.

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

It is not a de Polignac number, because 18234399 - 2⁴ = 18234383 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 (18234379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29197 + ... + 29814.

It is an arithmetic number, because the mean of its divisors is an integer number (3068624).

Almost surely, 2^18234399 is an apocalyptic number.

18234399 is a deficient number, since it is larger than the sum of its proper divisors (6314593).

18234399 is a wasteful number, since it uses less digits than its factorization.

18234399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59117.

The product of its digits is 46656, while the sum is 39.

The square root of 18234399 is about 4270.1755233245. The cubic root of 18234399 is about 263.2068279117.

The spelling of 18234399 in words is "eighteen million, two hundred thirty-four thousand, three hundred ninety-nine".