90985406 has 8 divisors (see below), whose sum is σ = 138205920. Its totient is φ = 44916768.

The previous prime is 90985381. The next prime is 90985423. The reversal of 90985406 is 60458909.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287771 + ... + 288086.

It is an arithmetic number, because the mean of its divisors is an integer number (17275740).

Almost surely, 2^90985406 is an apocalyptic number.

90985406 is a deficient number, since it is larger than the sum of its proper divisors (47220514).

90985406 is a wasteful number, since it uses less digits than its factorization.

90985406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575938.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 90985406 is about 9538.6270500529. The cubic root of 90985406 is about 449.7700982027.

The spelling of 90985406 in words is "ninety million, nine hundred eighty-five thousand, four hundred six".