40004436 has 12 divisors (see below), whose sum is σ = 93343712. Its totient is φ = 13334808.

The previous prime is 40004413. The next prime is 40004467. The reversal of 40004436 is 63440004.

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

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, 1666840 + ... + 1666863.

Almost surely, 2^40004436 is an apocalyptic number.

It is an amenable number.

40004436 is an abundant number, since it is smaller than the sum of its proper divisors (53339276).

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

40004436 is a wasteful number, since it uses less digits than its factorization.

40004436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333710 (or 3333708 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40004436 is about 6324.9060072067. The cubic root of 40004436 is about 342.0078312902.

The spelling of 40004436 in words is "forty million, four thousand, four hundred thirty-six".