499957961 has 2 divisors, whose sum is σ = 499957962. Its totient is φ = 499957960.

The previous prime is 499957951. The next prime is 499957993. The reversal of 499957961 is 169759994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325585936 + 174372025 = 18044^2 + 13205^2 .

It is a cyclic number.

It is not a de Polignac number, because 499957961 - 2⁶ = 499957897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 499957961.

It is not a weakly prime, because it can be changed into another prime (499957951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249978980 + 249978981.

It is an arithmetic number, because the mean of its divisors is an integer number (249978981).

Almost surely, 2^499957961 is an apocalyptic number.

It is an amenable number.

499957961 is a deficient number, since it is larger than the sum of its proper divisors (1).

499957961 is an equidigital number, since it uses as much as digits as its factorization.

499957961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5511240, while the sum is 59.

The square root of 499957961 is about 22359.7397346212. The cubic root of 499957961 is about 793.6782811097.

The spelling of 499957961 in words is "four hundred ninety-nine million, nine hundred fifty-seven thousand, nine hundred sixty-one".