433431994 has 4 divisors (see below), whose sum is σ = 650147994. Its totient is φ = 216715996.

The previous prime is 433431991. The next prime is 433432001. The reversal of 433431994 is 499134334.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 422836969 + 10595025 = 20563^2 + 3255^2 .

It is not an unprimeable number, because it can be changed into a prime (433431991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108357997 + ... + 108358000.

Almost surely, 2^433431994 is an apocalyptic number.

433431994 is a deficient number, since it is larger than the sum of its proper divisors (216716000).

433431994 is a wasteful number, since it uses less digits than its factorization.

433431994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216715999.

The product of its digits is 139968, while the sum is 40.

The square root of 433431994 is about 20819.0296123523. The cubic root of 433431994 is about 756.7869861992.

The spelling of 433431994 in words is "four hundred thirty-three million, four hundred thirty-one thousand, nine hundred ninety-four".