40669187 has 4 divisors (see below), whose sum is σ = 43797600. Its totient is φ = 37540776.

The previous prime is 40669183. The next prime is 40669193. The reversal of 40669187 is 78196604.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40669187 - 2² = 40669183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40669183) 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, 1564187 + ... + 1564212.

It is an arithmetic number, because the mean of its divisors is an integer number (10949400).

Almost surely, 2^40669187 is an apocalyptic number.

40669187 is a deficient number, since it is larger than the sum of its proper divisors (3128413).

40669187 is a wasteful number, since it uses less digits than its factorization.

40669187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128412.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 40669187 is about 6377.2397634086. The cubic root of 40669187 is about 343.8918078498.

The spelling of 40669187 in words is "forty million, six hundred sixty-nine thousand, one hundred eighty-seven".