40009188 has 12 divisors (see below), whose sum is σ = 93354800. Its totient is φ = 13336392.

The previous prime is 40009169. The next prime is 40009201. The reversal of 40009188 is 88190004.

It is a happy number.

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

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, 1667038 + ... + 1667061.

Almost surely, 2^40009188 is an apocalyptic number.

It is an amenable number.

40009188 is an abundant number, since it is smaller than the sum of its proper divisors (53345612).

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

40009188 is a wasteful number, since it uses less digits than its factorization.

40009188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334106 (or 3334104 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 40009188 is about 6325.2816538080. The cubic root of 40009188 is about 342.0213727623.

The spelling of 40009188 in words is "forty million, nine thousand, one hundred eighty-eight".