40403004 has 12 divisors (see below), whose sum is σ = 94273704. Its totient is φ = 13467664.

The previous prime is 40402997. The next prime is 40403009. The reversal of 40403004 is 40030404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40403009) 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, 1683447 + ... + 1683470.

It is an arithmetic number, because the mean of its divisors is an integer number (7856142).

Almost surely, 2^40403004 is an apocalyptic number.

It is an amenable number.

40403004 is an abundant number, since it is smaller than the sum of its proper divisors (53870700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40403004 is a wasteful number, since it uses less digits than its factorization.

40403004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366924 (or 3366922 counting only the distinct ones).

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

The square root of 40403004 is about 6356.3357368849. The cubic root of 40403004 is about 343.1398987894.

Adding to 40403004 its reverse (40030404), we get a palindrome (80433408).

The spelling of 40403004 in words is "forty million, four hundred three thousand, four".