90284169 has 4 divisors (see below), whose sum is σ = 120378896. Its totient is φ = 60189444.

The previous prime is 90284167. The next prime is 90284171. The reversal of 90284169 is 96148209.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (90284167) and next prime (90284171).

It is not a de Polignac number, because 90284169 - 2¹ = 90284167 is a prime.

It is a super-2 number, since 2×90284169² = 16302462344041122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90284167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15047359 + ... + 15047364.

It is an arithmetic number, because the mean of its divisors is an integer number (30094724).

Almost surely, 2^90284169 is an apocalyptic number.

It is an amenable number.

90284169 is a deficient number, since it is larger than the sum of its proper divisors (30094727).

90284169 is a wasteful number, since it uses less digits than its factorization.

90284169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30094726.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 90284169 is about 9501.7981982360. The cubic root of 90284169 is about 448.6116370061.

The spelling of 90284169 in words is "ninety million, two hundred eighty-four thousand, one hundred sixty-nine".