999061783 has 2 divisors, whose sum is σ = 999061784. Its totient is φ = 999061782.

The previous prime is 999061771. The next prime is 999061823. The reversal of 999061783 is 387160999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999061783 is a prime.

It is a super-2 number, since 2×999061783² = 1996248892502278178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 999061783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999061733) 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, 499530891 + 499530892.

It is an arithmetic number, because the mean of its divisors is an integer number (499530892).

Almost surely, 2^999061783 is an apocalyptic number.

999061783 is a deficient number, since it is larger than the sum of its proper divisors (1).

999061783 is an equidigital number, since it uses as much as digits as its factorization.

999061783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 999061783 is about 31607.9386072550. The cubic root of 999061783 is about 999.6871631433.

The spelling of 999061783 in words is "nine hundred ninety-nine million, sixty-one thousand, seven hundred eighty-three".