90254198 has 4 divisors (see below), whose sum is σ = 135381300. Its totient is φ = 45127098.

The previous prime is 90254191. The next prime is 90254209. The reversal of 90254198 is 89145209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89145209 = 5407 ⋅16487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90254191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22563548 + ... + 22563551.

It is an arithmetic number, because the mean of its divisors is an integer number (33845325).

Almost surely, 2^90254198 is an apocalyptic number.

90254198 is a deficient number, since it is larger than the sum of its proper divisors (45127102).

90254198 is a wasteful number, since it uses less digits than its factorization.

90254198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45127101.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 90254198 is about 9500.2209447991. The cubic root of 90254198 is about 448.5619906965.

The spelling of 90254198 in words is "ninety million, two hundred fifty-four thousand, one hundred ninety-eight".