40043004 has 12 divisors (see below), whose sum is σ = 93433704. Its totient is φ = 13347664.

The previous prime is 40042993. The next prime is 40043063. The reversal of 40043004 is 40034004.

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

It is a super-3 number, since 3×40043004³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668447 + ... + 1668470.

It is an arithmetic number, because the mean of its divisors is an integer number (7786142).

Almost surely, 2^40043004 is an apocalyptic number.

It is an amenable number.

40043004 is an abundant number, since it is smaller than the sum of its proper divisors (53390700).

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

40043004 is a wasteful number, since it uses less digits than its factorization.

40043004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336924 (or 3336922 counting only the distinct ones).

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

The square root of 40043004 is about 6327.9541717683. The cubic root of 40043004 is about 342.1177051163.

Adding to 40043004 its reverse (40034004), we get a palindrome (80077008).

The spelling of 40043004 in words is "forty million, forty-three thousand, four".