90798243 has 4 divisors (see below), whose sum is σ = 121064328. Its totient is φ = 60532160.

The previous prime is 90798233. The next prime is 90798277. The reversal of 90798243 is 34289709.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34289709 = 3 ⋅11429903.

It is a cyclic number.

It is not a de Polignac number, because 90798243 - 2²¹ = 88701091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90798195 and 90798204.

It is not an unprimeable number, because it can be changed into a prime (90798223) 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, 15133038 + ... + 15133043.

It is an arithmetic number, because the mean of its divisors is an integer number (30266082).

Almost surely, 2^90798243 is an apocalyptic number.

90798243 is a deficient number, since it is larger than the sum of its proper divisors (30266085).

90798243 is a wasteful number, since it uses less digits than its factorization.

90798243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30266084.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 90798243 is about 9528.8112060215. The cubic root of 90798243 is about 449.4614842093.

The spelling of 90798243 in words is "ninety million, seven hundred ninety-eight thousand, two hundred forty-three".