90008406 has 24 divisors (see below), whose sum is σ = 195459264. Its totient is φ = 29934960.

The previous prime is 90008393. The next prime is 90008419. The reversal of 90008406 is 60480009.

It is an interprime number because it is at equal distance from previous prime (90008393) and next prime (90008419).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90008406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2875 + ... + 13721.

It is an arithmetic number, because the mean of its divisors is an integer number (8144136).

Almost surely, 2^90008406 is an apocalyptic number.

90008406 is an abundant number, since it is smaller than the sum of its proper divisors (105450858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90008406 is a wasteful number, since it uses less digits than its factorization.

90008406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11316 (or 11313 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 90008406 is about 9487.2760052609. The cubic root of 90008406 is about 448.1544263281.

The spelling of 90008406 in words is "ninety million, eight thousand, four hundred six".