40433321 has 4 divisors (see below), whose sum is σ = 40791252. Its totient is φ = 40075392.

The previous prime is 40433299. The next prime is 40433347. The reversal of 40433321 is 12333404.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19456921 + 20976400 = 4411^2 + 4580^2 .

It is a cyclic number.

It is not a de Polignac number, because 40433321 - 2²² = 36239017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40433293 and 40433302.

It is not an unprimeable number, because it can be changed into a prime (40433381) 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, 178796 + ... + 179021.

It is an arithmetic number, because the mean of its divisors is an integer number (10197813).

Almost surely, 2^40433321 is an apocalyptic number.

It is an amenable number.

40433321 is a deficient number, since it is larger than the sum of its proper divisors (357931).

40433321 is a wasteful number, since it uses less digits than its factorization.

40433321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357930.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 40433321 is about 6358.7200756127. The cubic root of 40433321 is about 343.2257040543.

Adding to 40433321 its reverse (12333404), we get a palindrome (52766725).

The spelling of 40433321 in words is "forty million, four hundred thirty-three thousand, three hundred twenty-one".