40440003 has 8 divisors (see below), whose sum is σ = 56264448. Its totient is φ = 25787784.

The previous prime is 40439977. The next prime is 40440013. The reversal of 40440003 is 30004404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40440003 - 2⁶ = 40439939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40440013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292975 + ... + 293112.

It is an arithmetic number, because the mean of its divisors is an integer number (7033056).

Almost surely, 2^40440003 is an apocalyptic number.

40440003 is a deficient number, since it is larger than the sum of its proper divisors (15824445).

40440003 is a wasteful number, since it uses less digits than its factorization.

40440003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586113.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 40440003 is about 6359.2454741109. The cubic root of 40440003 is about 343.2446101427.

Adding to 40440003 its reverse (30004404), we get a palindrome (70444407).

The spelling of 40440003 in words is "forty million, four hundred forty thousand, three".