1798099 has 4 divisors (see below), whose sum is σ = 1804264. Its totient is φ = 1791936.

The previous prime is 1798081. The next prime is 1798109. The reversal of 1798099 is 9908971.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9908971 = 131 ⋅75641.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1798099 is a prime.

It is a Duffinian number.

1798099 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1798009) 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, 2622 + ... + 3235.

It is an arithmetic number, because the mean of its divisors is an integer number (451066).

2^1798099 is an apocalyptic number.

1798099 is a deficient number, since it is larger than the sum of its proper divisors (6165).

1798099 is an equidigital number, since it uses as much as digits as its factorization.

1798099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6164.

The product of its (nonzero) digits is 40824, while the sum is 43.

The square root of 1798099 is about 1340.9321384768. The cubic root of 1798099 is about 121.6012016199.

The spelling of 1798099 in words is "one million, seven hundred ninety-eight thousand, ninety-nine".