1098458 has 4 divisors (see below), whose sum is σ = 1647690. Its totient is φ = 549228.

The previous prime is 1098451. The next prime is 1098463. The reversal of 1098458 is 8548901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1087849 + 10609 = 1043^2 + 103^2 .

It is a Curzon number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (1098451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274613 + ... + 274616.

2^1098458 is an apocalyptic number.

1098458 is a deficient number, since it is larger than the sum of its proper divisors (549232).

1098458 is an equidigital number, since it uses as much as digits as its factorization.

1098458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549231.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1098458 is about 1048.0734707071. The cubic root of 1098458 is about 103.1797533544.

The spelling of 1098458 in words is "one million, ninety-eight thousand, four hundred fifty-eight".