999977441 has 2 divisors, whose sum is σ = 999977442. Its totient is φ = 999977440.

The previous prime is 999977423. The next prime is 999977471. The reversal of 999977441 is 144779999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 720385600 + 279591841 = 26840^2 + 16721^2 .

It is a cyclic number.

It is not a de Polignac number, because 999977441 - 2¹⁴ = 999961057 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (999977411) 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, 499988720 + 499988721.

It is an arithmetic number, because the mean of its divisors is an integer number (499988721).

Almost surely, 2^999977441 is an apocalyptic number.

It is an amenable number.

999977441 is a deficient number, since it is larger than the sum of its proper divisors (1).

999977441 is an equidigital number, since it uses as much as digits as its factorization.

999977441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5143824, while the sum is 59.

The square root of 999977441 is about 31622.4199105635. The cubic root of 999977441 is about 999.9924802768.

The spelling of 999977441 in words is "nine hundred ninety-nine million, nine hundred seventy-seven thousand, four hundred forty-one".