413991091 has 4 divisors (see below), whose sum is σ = 414032472. Its totient is φ = 413949712.

The previous prime is 413991077. The next prime is 413991101. The reversal of 413991091 is 190199314.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 413991091 - 2⁷ = 413990963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 413991091.

It is not an unprimeable number, because it can be changed into a prime (413991001) 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, 4716 + ... + 29158.

It is an arithmetic number, because the mean of its divisors is an integer number (103508118).

Almost surely, 2^413991091 is an apocalyptic number.

413991091 is a deficient number, since it is larger than the sum of its proper divisors (41381).

413991091 is a wasteful number, since it uses less digits than its factorization.

413991091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41380.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 413991091 is about 20346.7710214668. The cubic root of 413991091 is about 745.2986451878.

The spelling of 413991091 in words is "four hundred thirteen million, nine hundred ninety-one thousand, ninety-one".