9994531 has 4 divisors (see below), whose sum is σ = 10339200. Its totient is φ = 9649864.

The previous prime is 9994507. The next prime is 9994553. The reversal of 9994531 is 1354999.

9994531 = 573² + 574² + ... + 601².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1354999 = 23 ⋅58913.

It is a cyclic number.

It is not a de Polignac number, because 9994531 - 2⁵ = 9994499 is a prime.

It is a super-2 number, since 2×9994531² = 199781299819922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

9994531 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9994331) 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, 172291 + ... + 172348.

It is an arithmetic number, because the mean of its divisors is an integer number (2584800).

Almost surely, 2^9994531 is an apocalyptic number.

9994531 is a deficient number, since it is larger than the sum of its proper divisors (344669).

9994531 is a wasteful number, since it uses less digits than its factorization.

9994531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344668.

The product of its digits is 43740, while the sum is 40.

The square root of 9994531 is about 3161.4128170804. The cubic root of 9994531 is about 215.4041864967.

The spelling of 9994531 in words is "nine million, nine hundred ninety-four thousand, five hundred thirty-one".