40047166 has 4 divisors (see below), whose sum is σ = 60070752. Its totient is φ = 20023582.

The previous prime is 40047157. The next prime is 40047169. The reversal of 40047166 is 66174004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40047169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011790 + ... + 10011793.

It is an arithmetic number, because the mean of its divisors is an integer number (15017688).

Almost surely, 2^40047166 is an apocalyptic number.

40047166 is a deficient number, since it is larger than the sum of its proper divisors (20023586).

40047166 is a wasteful number, since it uses less digits than its factorization.

40047166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20023585.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 40047166 is about 6328.2830214838. The cubic root of 40047166 is about 342.1295577448.

The spelling of 40047166 in words is "forty million, forty-seven thousand, one hundred sixty-six".