1098975 has 12 divisors (see below), whose sum is σ = 1817096. Its totient is φ = 586080.

The previous prime is 1098973. The next prime is 1098989. The reversal of 1098975 is 5798901.

It is a happy number.

It is not a de Polignac number, because 1098975 - 2¹ = 1098973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7252 + ... + 7401.

2^1098975 is an apocalyptic number.

1098975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1098975 is a deficient number, since it is larger than the sum of its proper divisors (718121).

1098975 is a wasteful number, since it uses less digits than its factorization.

1098975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14666 (or 14661 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 1098975 is about 1048.3200847070. The cubic root of 1098975 is about 103.1959383354.

The spelling of 1098975 in words is "one million, ninety-eight thousand, nine hundred seventy-five".