1598899 has 2 divisors, whose sum is σ = 1598900. Its totient is φ = 1598898.

The previous prime is 1598897. The next prime is 1598911. The reversal of 1598899 is 9988951.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1598899 - 2¹ = 1598897 is a prime.

Together with 1598897, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1598897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 799449 + 799450.

It is an arithmetic number, because the mean of its divisors is an integer number (799450).

2^1598899 is an apocalyptic number.

1598899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1598899 is an equidigital number, since it uses as much as digits as its factorization.

1598899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 49.

The square root of 1598899 is about 1264.4757807091. The cubic root of 1598899 is about 116.9338755098.

The spelling of 1598899 in words is "one million, five hundred ninety-eight thousand, eight hundred ninety-nine".