1099481 has 4 divisors (see below), whose sum is σ = 1102464. Its totient is φ = 1096500.

The previous prime is 1099463. The next prime is 1099487. The reversal of 1099481 is 1849901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1849901 = 151 ⋅12251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1099481 is a prime.

It is a super-2 number, since 2×1099481² = 2417716938722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099487) 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, 845 + ... + 1706.

It is an arithmetic number, because the mean of its divisors is an integer number (275616).

2^1099481 is an apocalyptic number.

It is an amenable number.

1099481 is a deficient number, since it is larger than the sum of its proper divisors (2983).

1099481 is an equidigital number, since it uses as much as digits as its factorization.

1099481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2982.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1099481 is about 1048.5613954366. The cubic root of 1099481 is about 103.2117740407.

The spelling of 1099481 in words is "one million, ninety-nine thousand, four hundred eighty-one".