90409411 has 4 divisors (see below), whose sum is σ = 90456552. Its totient is φ = 90362272.

The previous prime is 90409409. The next prime is 90409433. The reversal of 90409411 is 11490409.

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

It is a cyclic number.

It is not a de Polignac number, because 90409411 - 2¹ = 90409409 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 90409411.

It is not an unprimeable number, because it can be changed into a prime (90404411) 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 3 ways as a sum of consecutive naturals, for example, 20566 + ... + 24571.

It is an arithmetic number, because the mean of its divisors is an integer number (22614138).

Almost surely, 2^90409411 is an apocalyptic number.

90409411 is a deficient number, since it is larger than the sum of its proper divisors (47141).

90409411 is a wasteful number, since it uses less digits than its factorization.

90409411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47140.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 90409411 is about 9508.3863510061. The cubic root of 90409411 is about 448.8189788519.

The spelling of 90409411 in words is "ninety million, four hundred nine thousand, four hundred eleven".