40166499 has 4 divisors (see below), whose sum is σ = 53555336. Its totient is φ = 26777664.

The previous prime is 40166459. The next prime is 40166509. The reversal of 40166499 is 99466104.

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

It is not a de Polignac number, because 40166499 - 2¹⁷ = 40035427 is a prime.

It is a super-2 number, since 2×40166499² = 3226695283834002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40166449) 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, 6694414 + ... + 6694419.

It is an arithmetic number, because the mean of its divisors is an integer number (13388834).

Almost surely, 2^40166499 is an apocalyptic number.

40166499 is a deficient number, since it is larger than the sum of its proper divisors (13388837).

40166499 is a wasteful number, since it uses less digits than its factorization.

40166499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13388836.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 40166499 is about 6337.7045529119. The cubic root of 40166499 is about 342.4690479426.

The spelling of 40166499 in words is "forty million, one hundred sixty-six thousand, four hundred ninety-nine".