9826421005 has 16 divisors (see below), whose sum is σ = 12789859824. Its totient is φ = 7218257920.

The previous prime is 9826420979. The next prime is 9826421021. The reversal of 9826421005 is 5001246289.

It can be written as a sum of positive squares in 8 ways, for example, as 6007401 + 9820413604 = 2451^2 + 99098^2 .

It is not a de Polignac number, because 9826421005 - 2⁹ = 9826420493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1406332 + ... + 1413301.

It is an arithmetic number, because the mean of its divisors is an integer number (799366239).

Almost surely, 2^9826421005 is an apocalyptic number.

It is an amenable number.

9826421005 is a deficient number, since it is larger than the sum of its proper divisors (2963438819).

9826421005 is a wasteful number, since it uses less digits than its factorization.

9826421005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2819696.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 9826421005 is about 99128.3057708544. The cubic root of 9826421005 is about 2141.8963745264.

The spelling of 9826421005 in words is "nine billion, eight hundred twenty-six million, four hundred twenty-one thousand, five".