40340403 has 8 divisors (see below), whose sum is σ = 59763600. Its totient is φ = 26893584.

The previous prime is 40340387. The next prime is 40340437. The reversal of 40340403 is 30404304.

It is not a de Polignac number, because 40340403 - 2⁴ = 40340387 is a prime.

It is a super-2 number, since 2×40340403² = 3254696228404818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40340203) 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, 747018 + ... + 747071.

It is an arithmetic number, because the mean of its divisors is an integer number (7470450).

Almost surely, 2^40340403 is an apocalyptic number.

40340403 is a deficient number, since it is larger than the sum of its proper divisors (19423197).

40340403 is a wasteful number, since it uses less digits than its factorization.

40340403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494098 (or 1494092 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 40340403 is about 6351.4095286007. The cubic root of 40340403 is about 342.9625852028.

Adding to 40340403 its reverse (30404304), we get a palindrome (70744707).

The spelling of 40340403 in words is "forty million, three hundred forty thousand, four hundred three".