1098147 has 8 divisors (see below), whose sum is σ = 1469520. Its totient is φ = 729440.

The previous prime is 1098133. The next prime is 1098151. The reversal of 1098147 is 7418901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1098147 - 2⁸ = 1097891 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1098187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697 + ... + 1637.

It is an arithmetic number, because the mean of its divisors is an integer number (183690).

2^1098147 is an apocalyptic number.

1098147 is a deficient number, since it is larger than the sum of its proper divisors (371373).

1098147 is an equidigital number, since it uses as much as digits as its factorization.

1098147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1098147 is about 1047.9250927428. The cubic root of 1098147 is about 103.1700148749.

It can be divided in two parts, 109 and 8147, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 1098147 in words is "one million, ninety-eight thousand, one hundred forty-seven".