1099498 has 4 divisors (see below), whose sum is σ = 1649250. Its totient is φ = 549748.

The previous prime is 1099493. The next prime is 1099499. The reversal of 1099498 is 8949901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8949901 = 2789 ⋅3209.

It can be written as a sum of positive squares in only one way, i.e., 815409 + 284089 = 903^2 + 533^2 .

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 self number, because there is not a number n which added to its sum of digits gives 1099498.

It is not an unprimeable number, because it can be changed into a prime (1099493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274873 + ... + 274876.

2^1099498 is an apocalyptic number.

1099498 is a deficient number, since it is larger than the sum of its proper divisors (549752).

1099498 is an equidigital number, since it uses as much as digits as its factorization.

1099498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549751.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1099498 is about 1048.5695017499. The cubic root of 1099498 is about 103.2123059860.

The spelling of 1099498 in words is "one million, ninety-nine thousand, four hundred ninety-eight".