232289993 has 6 divisors (see below), whose sum is σ = 251533134. Its totient is φ = 214421376.

The previous prime is 232289987. The next prime is 232290059. The reversal of 232289993 is 399982232.

It can be written as a sum of positive squares in 3 ways, for example, as 3433609 + 228856384 = 1853^2 + 15128^2 .

It is not a de Polignac number, because 232289993 - 2⁶ = 232289929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (232289963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 687080 + ... + 687417.

It is an arithmetic number, because the mean of its divisors is an integer number (41922189).

Almost surely, 2^232289993 is an apocalyptic number.

It is an amenable number.

232289993 is a deficient number, since it is larger than the sum of its proper divisors (19243141).

232289993 is a wasteful number, since it uses less digits than its factorization.

232289993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374523 (or 1374510 counting only the distinct ones).

The product of its digits is 419904, while the sum is 47.

The square root of 232289993 is about 15241.0627254139. The cubic root of 232289993 is about 614.7192787609.

The spelling of 232289993 in words is "two hundred thirty-two million, two hundred eighty-nine thousand, nine hundred ninety-three".