1019899 has 2 divisors, whose sum is σ = 1019900. Its totient is φ = 1019898.

The previous prime is 1019873. The next prime is 1019903. The reversal of 1019899 is 9989101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1019899 - 2⁷ = 1019771 is a prime.

It is not a weakly prime, because it can be changed into another prime (1019819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509949 + 509950.

It is an arithmetic number, because the mean of its divisors is an integer number (509950).

2^1019899 is an apocalyptic number.

1019899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1019899 is an equidigital number, since it uses as much as digits as its factorization.

1019899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 1019899 is about 1009.9004901474. The cubic root of 1019899 is about 100.6589483335.

It can be divided in two parts, 101 and 9899, that added together give a 4-th power (10000 = 10⁴).

The spelling of 1019899 in words is "one million, nineteen thousand, eight hundred ninety-nine".