40389303 has 16 divisors (see below), whose sum is σ = 54878720. Its totient is φ = 26417664.

The previous prime is 40389301. The next prime is 40389313. The reversal of 40389303 is 30398304.

It is a happy number.

40389303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40389303 - 2¹ = 40389301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40389301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45300 + ... + 46182.

It is an arithmetic number, because the mean of its divisors is an integer number (3429920).

Almost surely, 2^40389303 is an apocalyptic number.

40389303 is a deficient number, since it is larger than the sum of its proper divisors (14489417).

40389303 is a wasteful number, since it uses less digits than its factorization.

40389303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 40389303 is about 6355.2579019266. The cubic root of 40389303 is about 343.1011071913.

Subtracting from 40389303 its reverse (30398304), we obtain a palindrome (9990999).

The spelling of 40389303 in words is "forty million, three hundred eighty-nine thousand, three hundred three".