40115403 has 18 divisors (see below), whose sum is σ = 61159644. Its totient is φ = 25333992.

The previous prime is 40115389. The next prime is 40115407. The reversal of 40115403 is 30451104.

It is a happy number.

It is not a de Polignac number, because 40115403 - 2⁵ = 40115371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40115407) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2925 + ... + 9422.

It is an arithmetic number, because the mean of its divisors is an integer number (3397758).

Almost surely, 2^40115403 is an apocalyptic number.

40115403 is a deficient number, since it is larger than the sum of its proper divisors (21044241).

40115403 is a wasteful number, since it uses less digits than its factorization.

40115403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12391 (or 12369 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40115403 is about 6333.6721576034. The cubic root of 40115403 is about 342.3237674704.

Adding to 40115403 its reverse (30451104), we get a palindrome (70566507).

The spelling of 40115403 in words is "forty million, one hundred fifteen thousand, four hundred three".