999955433 has 2 divisors, whose sum is σ = 999955434. Its totient is φ = 999955432.

The previous prime is 999955417. The next prime is 999955457. The reversal of 999955433 is 334559999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622352809 + 377602624 = 24947^2 + 19432^2 .

It is a cyclic number.

It is not a de Polignac number, because 999955433 - 2⁴ = 999955417 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 (999955483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499977716 + 499977717.

It is an arithmetic number, because the mean of its divisors is an integer number (499977717).

Almost surely, 2^999955433 is an apocalyptic number.

It is an amenable number.

999955433 is a deficient number, since it is larger than the sum of its proper divisors (1).

999955433 is an equidigital number, since it uses as much as digits as its factorization.

999955433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5904900, while the sum is 56.

The square root of 999955433 is about 31622.0719276900. The cubic root of 999955433 is about 999.9851441126.

The spelling of 999955433 in words is "nine hundred ninety-nine million, nine hundred fifty-five thousand, four hundred thirty-three".