1047845899 has 2 divisors, whose sum is σ = 1047845900. Its totient is φ = 1047845898.

The previous prime is 1047845863. The next prime is 1047845917. The reversal of 1047845899 is 9985487401.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9985487401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1047845899 - 2⁹ = 1047845387 is a prime.

It is a super-2 number, since 2×1047845899² = 2195962056102236402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1047845299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523922949 + 523922950.

It is an arithmetic number, because the mean of its divisors is an integer number (523922950).

Almost surely, 2^1047845899 is an apocalyptic number.

1047845899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1047845899 is an equidigital number, since it uses as much as digits as its factorization.

1047845899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 1047845899 is about 32370.4479270831. The cubic root of 1047845899 is about 1015.7008268675.

The spelling of 1047845899 in words is "one billion, forty-seven million, eight hundred forty-five thousand, eight hundred ninety-nine".