9809634493 has 4 divisors (see below), whose sum is σ = 9819534208. Its totient is φ = 9799734780.

The previous prime is 9809634473. The next prime is 9809634547. The reversal of 9809634493 is 3944369089.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9809634493 - 2²⁹ = 9272763581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9809634403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4948371 + ... + 4950352.

It is an arithmetic number, because the mean of its divisors is an integer number (2454883552).

Almost surely, 2^9809634493 is an apocalyptic number.

It is an amenable number.

9809634493 is a deficient number, since it is larger than the sum of its proper divisors (9899715).

9809634493 is an equidigital number, since it uses as much as digits as its factorization.

9809634493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9899714.

The product of its (nonzero) digits is 5038848, while the sum is 55.

The square root of 9809634493 is about 99043.5989501593. The cubic root of 9809634493 is about 2140.6760094639.

The spelling of 9809634493 in words is "nine billion, eight hundred nine million, six hundred thirty-four thousand, four hundred ninety-three".