9992513 has 4 divisors (see below), whose sum is σ = 10009428. Its totient is φ = 9975600.

The previous prime is 9992497. The next prime is 9992531. The reversal of 9992513 is 3152999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3152999 = 727 ⋅4337.

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 6723649 = 1808^2 + 2593^2 .

It is a cyclic number.

It is not a de Polignac number, because 9992513 - 2⁴ = 9992497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9992533) 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, 7538 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (2502357).

Almost surely, 2^9992513 is an apocalyptic number.

It is an amenable number.

9992513 is a deficient number, since it is larger than the sum of its proper divisors (16915).

9992513 is a wasteful number, since it uses less digits than its factorization.

9992513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16914.

The product of its digits is 21870, while the sum is 38.

The square root of 9992513 is about 3161.0936398658. The cubic root of 9992513 is about 215.3896880706.

The spelling of 9992513 in words is "nine million, nine hundred ninety-two thousand, five hundred thirteen".