9999479 has 8 divisors (see below), whose sum is σ = 11661600. Its totient is φ = 8570688.

The previous prime is 9999469. The next prime is 9999481. The reversal of 9999479 is 9749999.

9999479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9999479 - 2⁴ = 9999463 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14234 + ... + 14919.

It is an arithmetic number, because the mean of its divisors is an integer number (1457700).

Almost surely, 2^9999479 is an apocalyptic number.

9999479 is a deficient number, since it is larger than the sum of its proper divisors (1662121).

9999479 is an equidigital number, since it uses as much as digits as its factorization.

9999479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29174 (or 29160 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 56.

The square root of 9999479 is about 3162.1952817623. The cubic root of 9999479 is about 215.4397274033.

The spelling of 9999479 in words is "nine million, nine hundred ninety-nine thousand, four hundred seventy-nine".