4099135691 has 32 divisors (see below), whose sum is σ = 4956069888. Its totient is φ = 3317398560.

The previous prime is 4099135657. The next prime is 4099135697. The reversal of 4099135691 is 1965319904.

It is a happy number.

It is not a de Polignac number, because 4099135691 - 2¹⁴ = 4099119307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (4099135697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1172456 + ... + 1175946.

It is an arithmetic number, because the mean of its divisors is an integer number (154877184).

Almost surely, 2^4099135691 is an apocalyptic number.

4099135691 is a deficient number, since it is larger than the sum of its proper divisors (856934197).

4099135691 is a wasteful number, since it uses less digits than its factorization.

4099135691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 4099135691 is about 64024.4928992023. The cubic root of 4099135691 is about 1600.4081889537.

The spelling of 4099135691 in words is "four billion, ninety-nine million, one hundred thirty-five thousand, six hundred ninety-one".