40408203 has 16 divisors (see below), whose sum is σ = 60028416. Its totient is φ = 23967840.

The previous prime is 40408187. The next prime is 40408211. The reversal of 40408203 is 30280404.

It is a happy number.

It is not a de Polignac number, because 40408203 - 2⁴ = 40408187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40408203.

It is not an unprimeable number, because it can be changed into a prime (40408213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11476 + ... + 14577.

It is an arithmetic number, because the mean of its divisors is an integer number (3751776).

Almost surely, 2^40408203 is an apocalyptic number.

40408203 is a deficient number, since it is larger than the sum of its proper divisors (19620213).

40408203 is a wasteful number, since it uses less digits than its factorization.

40408203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26114.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 40408203 is about 6356.7446857649. The cubic root of 40408203 is about 343.1546164064.

Adding to 40408203 its reverse (30280404), we get a palindrome (70688607).

The spelling of 40408203 in words is "forty million, four hundred eight thousand, two hundred three".