40403443 has 8 divisors (see below), whose sum is σ = 42611600. Its totient is φ = 38203488.

The previous prime is 40403417. The next prime is 40403449. The reversal of 40403443 is 34430404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40403443 - 2²¹ = 38306291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40403449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9913 + ... + 13381.

It is an arithmetic number, because the mean of its divisors is an integer number (5326450).

Almost surely, 2^40403443 is an apocalyptic number.

40403443 is a deficient number, since it is larger than the sum of its proper divisors (2208157).

40403443 is a wasteful number, since it uses less digits than its factorization.

40403443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 40403443 is about 6356.3702692653. The cubic root of 40403443 is about 343.1411415837.

Adding to 40403443 its reverse (34430404), we get a palindrome (74833847).

The spelling of 40403443 in words is "forty million, four hundred three thousand, four hundred forty-three".