9953279999 has 16 divisors (see below), whose sum is σ = 10922688000. Its totient is φ = 9013614816.

The previous prime is 9953279989. The next prime is 9953280011. The reversal of 9953279999 is 9999723599.

It is a cyclic number.

It is not a de Polignac number, because 9953279999 - 2¹⁶ = 9953214463 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 (9953279909) 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, 372902 + ... + 398700.

It is an arithmetic number, because the mean of its divisors is an integer number (682668000).

Almost surely, 2^9953279999 is an apocalyptic number.

9953279999 is a deficient number, since it is larger than the sum of its proper divisors (969408001).

9953279999 is a wasteful number, since it uses less digits than its factorization.

9953279999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26374.

The product of its digits is 111602610, while the sum is 71.

The square root of 9953279999 is about 99766.1265109556. The cubic root of 9953279999 is about 2151.0742782754.

The spelling of 9953279999 in words is "nine billion, nine hundred fifty-three million, two hundred seventy-nine thousand, nine hundred ninety-nine".