40408603 has 4 divisors (see below), whose sum is σ = 40618168. Its totient is φ = 40199040.

The previous prime is 40408591. The next prime is 40408607. The reversal of 40408603 is 30680404.

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

It is a cyclic number.

It is not a de Polignac number, because 40408603 - 2²⁵ = 6854171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40408607) 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, 104493 + ... + 104878.

It is an arithmetic number, because the mean of its divisors is an integer number (10154542).

Almost surely, 2^40408603 is an apocalyptic number.

40408603 is a deficient number, since it is larger than the sum of its proper divisors (209565).

40408603 is a wasteful number, since it uses less digits than its factorization.

40408603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209564.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 40408603 is about 6356.7761483318. The cubic root of 40408603 is about 343.1557486962.

The spelling of 40408603 in words is "forty million, four hundred eight thousand, six hundred three".