1798447 has 18 divisors (see below), whose sum is σ = 2239872. Its totient is φ = 1439424.

The previous prime is 1798441. The next prime is 1798451. The reversal of 1798447 is 7448971.

It is not a de Polignac number, because 1798447 - 2¹⁵ = 1765679 is a prime.

It is a super-2 number, since 2×1798447² = 6468823223618, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

1798447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14098 + ... + 14224.

2^1798447 is an apocalyptic number.

1798447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1798447 is a deficient number, since it is larger than the sum of its proper divisors (441425).

1798447 is a wasteful number, since it uses less digits than its factorization.

1798447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 151 counting only the distinct ones).

The product of its digits is 56448, while the sum is 40.

The square root of 1798447 is about 1341.0618926806. The cubic root of 1798447 is about 121.6090459207.

The spelling of 1798447 in words is "one million, seven hundred ninety-eight thousand, four hundred forty-seven".