999761233 has 2 divisors, whose sum is σ = 999761234. Its totient is φ = 999761232.

The previous prime is 999761183. The next prime is 999761237. The reversal of 999761233 is 332167999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 872139024 + 127622209 = 29532^2 + 11297^2 .

It is an emirp because it is prime and its reverse (332167999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999761233 - 2¹⁷ = 999630161 is a prime.

It is not a weakly prime, because it can be changed into another prime (999761237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499880616 + 499880617.

It is an arithmetic number, because the mean of its divisors is an integer number (499880617).

Almost surely, 2^999761233 is an apocalyptic number.

It is an amenable number.

999761233 is a deficient number, since it is larger than the sum of its proper divisors (1).

999761233 is an equidigital number, since it uses as much as digits as its factorization.

999761233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 551124, while the sum is 49.

The square root of 999761233 is about 31619.0011385559. The cubic root of 999761233 is about 999.9204046648.

The spelling of 999761233 in words is "nine hundred ninety-nine million, seven hundred sixty-one thousand, two hundred thirty-three".