433240397 has 4 divisors (see below), whose sum is σ = 452076960. Its totient is φ = 414403836.

The previous prime is 433240387. The next prime is 433240403. The reversal of 433240397 is 793042334.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-433240397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (433240387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9418247 + ... + 9418292.

It is an arithmetic number, because the mean of its divisors is an integer number (113019240).

Almost surely, 2^433240397 is an apocalyptic number.

It is an amenable number.

433240397 is a deficient number, since it is larger than the sum of its proper divisors (18836563).

433240397 is a wasteful number, since it uses less digits than its factorization.

433240397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18836562.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 433240397 is about 20814.4276164395. The cubic root of 433240397 is about 756.6754581404.

The spelling of 433240397 in words is "four hundred thirty-three million, two hundred forty thousand, three hundred ninety-seven".