1828399 has 2 divisors, whose sum is σ = 1828400. Its totient is φ = 1828398.

The previous prime is 1828397. The next prime is 1828423. The reversal of 1828399 is 9938281.

It is a weak prime.

It is an emirp because it is prime and its reverse (9938281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1828399 - 2¹ = 1828397 is a prime.

Together with 1828397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1828397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 914199 + 914200.

It is an arithmetic number, because the mean of its divisors is an integer number (914200).

2^1828399 is an apocalyptic number.

1828399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1828399 is an equidigital number, since it uses as much as digits as its factorization.

1828399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 40.

The square root of 1828399 is about 1352.1830497385. The cubic root of 1828399 is about 122.2804396971.

The spelling of 1828399 in words is "one million, eight hundred twenty-eight thousand, three hundred ninety-nine".