40099811 has 4 divisors (see below), whose sum is σ = 40114032. Its totient is φ = 40085592.

The previous prime is 40099799. The next prime is 40099817. The reversal of 40099811 is 11899004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40099811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40099817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1295 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (10028508).

Almost surely, 2^40099811 is an apocalyptic number.

40099811 is a deficient number, since it is larger than the sum of its proper divisors (14221).

40099811 is a wasteful number, since it uses less digits than its factorization.

40099811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14220.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 40099811 is about 6332.4411564578. The cubic root of 40099811 is about 342.2794104117.

The spelling of 40099811 in words is "forty million, ninety-nine thousand, eight hundred eleven".