1145899 has 2 divisors, whose sum is σ = 1145900. Its totient is φ = 1145898.

The previous prime is 1145897. The next prime is 1145971. The reversal of 1145899 is 9985411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1145899 - 2¹ = 1145897 is a prime.

Together with 1145897, it forms a pair of twin primes.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1145897) 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, 572949 + 572950.

It is an arithmetic number, because the mean of its divisors is an integer number (572950).

2^1145899 is an apocalyptic number.

1145899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145899 is an equidigital number, since it uses as much as digits as its factorization.

1145899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 37.

The square root of 1145899 is about 1070.4667206410. The cubic root of 1145899 is about 104.6442685833.

It can be divided in two parts, 114589 and 9, that multiplied together give a palindrome (1031301).

The spelling of 1145899 in words is "one million, one hundred forty-five thousand, eight hundred ninety-nine".