1798949 has 4 divisors (see below), whose sum is σ = 1804320. Its totient is φ = 1793580.

The previous prime is 1798943. The next prime is 1798963. The reversal of 1798949 is 9498971.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1798949 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 (1798943) 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, 2147 + ... + 2864.

It is an arithmetic number, because the mean of its divisors is an integer number (451080).

2^1798949 is an apocalyptic number.

It is an amenable number.

1798949 is a deficient number, since it is larger than the sum of its proper divisors (5371).

1798949 is an equidigital number, since it uses as much as digits as its factorization.

1798949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5370.

The product of its digits is 163296, while the sum is 47.

The square root of 1798949 is about 1341.2490447340. The cubic root of 1798949 is about 121.6203597676.

The spelling of 1798949 in words is "one million, seven hundred ninety-eight thousand, nine hundred forty-nine".