90162249 has 4 divisors (see below), whose sum is σ = 120216336. Its totient is φ = 60108164.

The previous prime is 90162223. The next prime is 90162257. The reversal of 90162249 is 94226109.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94226109 = 3 ⋅31408703.

It is a cyclic number.

It is not a de Polignac number, because 90162249 - 2⁵ = 90162217 is a prime.

It is a super-2 number, since 2×90162249² = 16258462289476002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90162299) 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, 15027039 + ... + 15027044.

It is an arithmetic number, because the mean of its divisors is an integer number (30054084).

Almost surely, 2^90162249 is an apocalyptic number.

It is an amenable number.

90162249 is a deficient number, since it is larger than the sum of its proper divisors (30054087).

90162249 is a wasteful number, since it uses less digits than its factorization.

90162249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30054086.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 90162249 is about 9495.3804031224. The cubic root of 90162249 is about 448.4096105606.

The spelling of 90162249 in words is "ninety million, one hundred sixty-two thousand, two hundred forty-nine".