40001099 has 8 divisors (see below), whose sum is σ = 42170880. Its totient is φ = 37837800.

The previous prime is 40001083. The next prime is 40001111. The reversal of 40001099 is 99010004.

40001099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40001099 - 2⁴ = 40001083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40001069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16154 + ... + 18464.

It is an arithmetic number, because the mean of its divisors is an integer number (5271360).

Almost surely, 2^40001099 is an apocalyptic number.

40001099 is a deficient number, since it is larger than the sum of its proper divisors (2169781).

40001099 is a wasteful number, since it uses less digits than its factorization.

40001099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 40001099 is about 6324.6422033187. The cubic root of 40001099 is about 341.9983214126.

The spelling of 40001099 in words is "forty million, one thousand, ninety-nine".