90408867 has 8 divisors (see below), whose sum is σ = 120748800. Its totient is φ = 60170760.

The previous prime is 90408847. The next prime is 90408881. The reversal of 90408867 is 76880409.

It is a happy number.

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

It is not a de Polignac number, because 90408867 - 2¹⁰ = 90407843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90408847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23359 + ... + 26952.

It is an arithmetic number, because the mean of its divisors is an integer number (15093600).

Almost surely, 2^90408867 is an apocalyptic number.

90408867 is a deficient number, since it is larger than the sum of its proper divisors (30339933).

90408867 is a wasteful number, since it uses less digits than its factorization.

90408867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50913.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 90408867 is about 9508.3577446371. The cubic root of 90408867 is about 448.8180786579.

The spelling of 90408867 in words is "ninety million, four hundred eight thousand, eight hundred sixty-seven".