40490004 has 48 divisors (see below), whose sum is σ = 97574400. Its totient is φ = 13060320.

The previous prime is 40489987. The next prime is 40490011. The reversal of 40490004 is 40009404.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67297 + ... + 67895.

It is an arithmetic number, because the mean of its divisors is an integer number (2032800).

Almost surely, 2^40490004 is an apocalyptic number.

It is an amenable number.

40490004 is an abundant number, since it is smaller than the sum of its proper divisors (57084396).

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

40490004 is a wasteful number, since it uses less digits than its factorization.

40490004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40490004 is about 6363.1756222817. The cubic root of 40490004 is about 343.3860171979.

Adding to 40490004 its reverse (40009404), we get a palindrome (80499408).

The spelling of 40490004 in words is "forty million, four hundred ninety thousand, four".