999445757 has 2 divisors, whose sum is σ = 999445758. Its totient is φ = 999445756.

The previous prime is 999445753. The next prime is 999445801. The reversal of 999445757 is 757544999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 730026361 + 269419396 = 27019^2 + 16414^2 .

It is a cyclic number.

It is not a de Polignac number, because 999445757 - 2² = 999445753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999445696 and 999445705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999445753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499722878 + 499722879.

It is an arithmetic number, because the mean of its divisors is an integer number (499722879).

Almost surely, 2^999445757 is an apocalyptic number.

It is an amenable number.

999445757 is a deficient number, since it is larger than the sum of its proper divisors (1).

999445757 is an equidigital number, since it uses as much as digits as its factorization.

999445757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14288400, while the sum is 59.

The square root of 999445757 is about 31614.0120358046. The cubic root of 999445757 is about 999.8152181911.

The spelling of 999445757 in words is "nine hundred ninety-nine million, four hundred forty-five thousand, seven hundred fifty-seven".