90289534 has 4 divisors (see below), whose sum is σ = 135434304. Its totient is φ = 45144766.

The previous prime is 90289519. The next prime is 90289543. The reversal of 90289534 is 43598209.

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: 43598209 = 271 ⋅160879.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22572382 + ... + 22572385.

It is an arithmetic number, because the mean of its divisors is an integer number (33858576).

Almost surely, 2^90289534 is an apocalyptic number.

90289534 is a deficient number, since it is larger than the sum of its proper divisors (45144770).

90289534 is a wasteful number, since it uses less digits than its factorization.

90289534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45144769.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 90289534 is about 9502.0805090254. The cubic root of 90289534 is about 448.6205228525.

The spelling of 90289534 in words is "ninety million, two hundred eighty-nine thousand, five hundred thirty-four".