9899424067 has 16 divisors (see below), whose sum is σ = 10780413952. Its totient is φ = 9035984160.

The previous prime is 9899424013. The next prime is 9899424127. The reversal of 9899424067 is 7604249989.

It is a cyclic number.

It is not a de Polignac number, because 9899424067 - 2³¹ = 7751940419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9899424967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497092 + ... + 516622.

It is an arithmetic number, because the mean of its divisors is an integer number (673775872).

Almost surely, 2^9899424067 is an apocalyptic number.

9899424067 is a deficient number, since it is larger than the sum of its proper divisors (880989885).

9899424067 is a wasteful number, since it uses less digits than its factorization.

9899424067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19978.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The square root of 9899424067 is about 99495.8494963483. The cubic root of 9899424067 is about 2147.1875298230.

It can be divided in two parts, 989942 and 4067, that added together give a square (994009 = 997²).

The spelling of 9899424067 in words is "nine billion, eight hundred ninety-nine million, four hundred twenty-four thousand, sixty-seven".