1098901 has 4 divisors (see below), whose sum is σ = 1101100. Its totient is φ = 1096704.

The previous prime is 1098847. The next prime is 1098953.

1098901 is nontrivially palindromic in base 10.

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

It can be written as a sum of positive squares in 2 ways, for example, as 224676 + 874225 = 474^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098901 - 2¹¹ = 1096853 is a prime.

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

It is a Duffinian number.

1098901 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1098901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098101) 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, 55 + ... + 1483.

It is an arithmetic number, because the mean of its divisors is an integer number (275275).

2^1098901 is an apocalyptic number.

It is an amenable number.

1098901 is a deficient number, since it is larger than the sum of its proper divisors (2199).

1098901 is an equidigital number, since it uses as much as digits as its factorization.

1098901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 1098901 is about 1048.2847895491. The cubic root of 1098901 is about 103.1936220344.

The spelling of 1098901 in words is "one million, ninety-eight thousand, nine hundred one".