90849238 has 4 divisors (see below), whose sum is σ = 136273860. Its totient is φ = 45424618.

The previous prime is 90849217. The next prime is 90849247. The reversal of 90849238 is 83294809.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83294809 = 13 ⋅6407293.

It is a junction number, because it is equal to n+sod(n) for n = 90849194 and 90849203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22712308 + ... + 22712311.

It is an arithmetic number, because the mean of its divisors is an integer number (34068465).

Almost surely, 2^90849238 is an apocalyptic number.

90849238 is a deficient number, since it is larger than the sum of its proper divisors (45424622).

90849238 is a wasteful number, since it uses less digits than its factorization.

90849238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45424621.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 90849238 is about 9531.4866626356. The cubic root of 90849238 is about 449.5456121178.

The spelling of 90849238 in words is "ninety million, eight hundred forty-nine thousand, two hundred thirty-eight".