1098599 has 8 divisors (see below), whose sum is σ = 1175040. Its totient is φ = 1024056.

The previous prime is 1098593. The next prime is 1098613. The reversal of 1098599 is 9958901.

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 1098599 - 2¹⁶ = 1033063 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 (1098593) 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, 842 + ... + 1704.

It is an arithmetic number, because the mean of its divisors is an integer number (146880).

2^1098599 is an apocalyptic number.

1098599 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1098599 is a deficient number, since it is larger than the sum of its proper divisors (76441).

1098599 is an equidigital number, since it uses as much as digits as its factorization.

1098599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 1098599 is about 1048.1407348252. The cubic root of 1098599 is about 103.1841679437.

The spelling of 1098599 in words is "one million, ninety-eight thousand, five hundred ninety-nine".