999424507 has 2 divisors, whose sum is σ = 999424508. Its totient is φ = 999424506.

The previous prime is 999424463. The next prime is 999424513. The reversal of 999424507 is 705424999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999424507 is a prime.

It is not a weakly prime, because it can be changed into another prime (999424007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499712253 + 499712254.

It is an arithmetic number, because the mean of its divisors is an integer number (499712254).

Almost surely, 2^999424507 is an apocalyptic number.

999424507 is a deficient number, since it is larger than the sum of its proper divisors (1).

999424507 is an equidigital number, since it uses as much as digits as its factorization.

999424507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 999424507 is about 31613.6759488674. The cubic root of 999424507 is about 999.8081321891.

The spelling of 999424507 in words is "nine hundred ninety-nine million, four hundred twenty-four thousand, five hundred seven".