1233923989 has 16 divisors (see below), whose sum is σ = 1292972800. Its totient is φ = 1176462144.

The previous prime is 1233923959. The next prime is 1233923993. The reversal of 1233923989 is 9893293321.

It is a cyclic number.

It is not a de Polignac number, because 1233923989 - 2⁷ = 1233923861 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 (1233923959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404779 + ... + 407815.

It is an arithmetic number, because the mean of its divisors is an integer number (80810800).

Almost surely, 2^1233923989 is an apocalyptic number.

It is an amenable number.

1233923989 is a deficient number, since it is larger than the sum of its proper divisors (59048811).

1233923989 is a wasteful number, since it uses less digits than its factorization.

1233923989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292.

The product of its digits is 629856, while the sum is 49.

The square root of 1233923989 is about 35127.2542194803. The cubic root of 1233923989 is about 1072.5794433322.

The spelling of 1233923989 in words is "one billion, two hundred thirty-three million, nine hundred twenty-three thousand, nine hundred eighty-nine".