1098291 has 4 divisors (see below), whose sum is σ = 1464392. Its totient is φ = 732192.

The previous prime is 1098287. The next prime is 1098301. The reversal of 1098291 is 1928901.

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

It is not a de Polignac number, because 1098291 - 2² = 1098287 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1098211) 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, 183046 + ... + 183051.

It is an arithmetic number, because the mean of its divisors is an integer number (366098).

2^1098291 is an apocalyptic number.

1098291 is a deficient number, since it is larger than the sum of its proper divisors (366101).

1098291 is an equidigital number, since it uses as much as digits as its factorization.

1098291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366100.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1098291 is about 1047.9937976916. The cubic root of 1098291 is about 103.1745242386.

The spelling of 1098291 in words is "one million, ninety-eight thousand, two hundred ninety-one".