90284791 has 8 divisors (see below), whose sum is σ = 92723904. Its totient is φ = 87867360.

The previous prime is 90284783. The next prime is 90284797. The reversal of 90284791 is 19748209.

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

It is a cyclic number.

It is not a de Polignac number, because 90284791 - 2³ = 90284783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90284797) 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, 3201 + ... + 13813.

It is an arithmetic number, because the mean of its divisors is an integer number (11590488).

Almost surely, 2^90284791 is an apocalyptic number.

90284791 is a deficient number, since it is larger than the sum of its proper divisors (2439113).

90284791 is a wasteful number, since it uses less digits than its factorization.

90284791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10841.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 90284791 is about 9501.8309288263. The cubic root of 90284791 is about 448.6126672192.

The spelling of 90284791 in words is "ninety million, two hundred eighty-four thousand, seven hundred ninety-one".