40343403 has 16 divisors (see below), whose sum is σ = 59086080. Its totient is φ = 24371424.

The previous prime is 40343399. The next prime is 40343419. The reversal of 40343403 is 30434304.

It is not a de Polignac number, because 40343403 - 2² = 40343399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40343403.

It is not an unprimeable number, because it can be changed into a prime (40343423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14076 + ... + 16697.

It is an arithmetic number, because the mean of its divisors is an integer number (3692880).

Almost surely, 2^40343403 is an apocalyptic number.

40343403 is a deficient number, since it is larger than the sum of its proper divisors (18742677).

40343403 is a wasteful number, since it uses less digits than its factorization.

40343403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30818.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 40343403 is about 6351.6456922596. The cubic root of 40343403 is about 342.9710867065.

Adding to 40343403 its reverse (30434304), we get a palindrome (70777707).

Subtracting from 40343403 its reverse (30434304), we obtain a palindrome (9909099).

The spelling of 40343403 in words is "forty million, three hundred forty-three thousand, four hundred three".