233748989 has 8 divisors (see below), whose sum is σ = 240936960. Its totient is φ = 226640736.

The previous prime is 233748947. The next prime is 233749003. The reversal of 233748989 is 989847332.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233748989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 233748989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233748289) 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, 13949 + ... + 25730.

It is an arithmetic number, because the mean of its divisors is an integer number (30117120).

Almost surely, 2^233748989 is an apocalyptic number.

It is an amenable number.

233748989 is a deficient number, since it is larger than the sum of its proper divisors (7187971).

233748989 is a wasteful number, since it uses less digits than its factorization.

233748989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39859.

The product of its digits is 2612736, while the sum is 53.

The square root of 233748989 is about 15288.8517881494. The cubic root of 233748989 is about 616.0035954771.

The spelling of 233748989 in words is "two hundred thirty-three million, seven hundred forty-eight thousand, nine hundred eighty-nine".