499927921 has 2 divisors, whose sum is σ = 499927922. Its totient is φ = 499927920.

The previous prime is 499927889. The next prime is 499927927. The reversal of 499927921 is 129729994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272250000 + 227677921 = 16500^2 + 15089^2 .

It is a cyclic number.

It is not a de Polignac number, because 499927921 - 2⁵ = 499927889 is a prime.

It is not a weakly prime, because it can be changed into another prime (499927927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249963960 + 249963961.

It is an arithmetic number, because the mean of its divisors is an integer number (249963961).

Almost surely, 2^499927921 is an apocalyptic number.

It is an amenable number.

499927921 is a deficient number, since it is larger than the sum of its proper divisors (1).

499927921 is an equidigital number, since it uses as much as digits as its factorization.

499927921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 52.

The square root of 499927921 is about 22359.0679814701. The cubic root of 499927921 is about 793.6623847244.

The spelling of 499927921 in words is "four hundred ninety-nine million, nine hundred twenty-seven thousand, nine hundred twenty-one".