990424099 has 4 divisors (see below), whose sum is σ = 1131913264. Its totient is φ = 848934936.

The previous prime is 990424081. The next prime is 990424133.

990424099 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990424099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990424049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70744572 + ... + 70744585.

It is an arithmetic number, because the mean of its divisors is an integer number (282978316).

Almost surely, 2^990424099 is an apocalyptic number.

990424099 is a deficient number, since it is larger than the sum of its proper divisors (141489165).

990424099 is a wasteful number, since it uses less digits than its factorization.

990424099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141489164.

The product of its (nonzero) digits is 209952, while the sum is 46.

The square root of 990424099 is about 31471.0040990115. The cubic root of 990424099 is about 996.7977897951.

The spelling of 990424099 in words is "nine hundred ninety million, four hundred twenty-four thousand, ninety-nine".