8921458 has 16 divisors (see below), whose sum is σ = 16470720. Its totient is φ = 3529296.

The previous prime is 8921453. The next prime is 8921461. The reversal of 8921458 is 8541298.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (8921453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24328 + ... + 24691.

It is an arithmetic number, because the mean of its divisors is an integer number (1029420).

Almost surely, 2^8921458 is an apocalyptic number.

8921458 is a deficient number, since it is larger than the sum of its proper divisors (7549262).

8921458 is a wasteful number, since it uses less digits than its factorization.

8921458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49041.

The product of its digits is 23040, while the sum is 37.

The square root of 8921458 is about 2986.8809818940. The cubic root of 8921458 is about 207.4015248607.

Adding to 8921458 its product of digits (23040), we get a palindrome (8944498).

The spelling of 8921458 in words is "eight million, nine hundred twenty-one thousand, four hundred fifty-eight".