9020491 has 4 divisors (see below), whose sum is σ = 9086472. Its totient is φ = 8954512.

The previous prime is 9020483. The next prime is 9020503. The reversal of 9020491 is 1940209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1940209 = 547 ⋅3547.

It is a cyclic number.

It is not a de Polignac number, because 9020491 - 2³ = 9020483 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9023491) 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, 32785 + ... + 33058.

It is an arithmetic number, because the mean of its divisors is an integer number (2271618).

Almost surely, 2^9020491 is an apocalyptic number.

9020491 is a deficient number, since it is larger than the sum of its proper divisors (65981).

9020491 is a wasteful number, since it uses less digits than its factorization.

9020491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65980.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 9020491 is about 3003.4132249825. The cubic root of 9020491 is about 208.1661256044.

The spelling of 9020491 in words is "nine million, twenty thousand, four hundred ninety-one".