9994551 has 32 divisors (see below), whose sum is σ = 16488960. Its totient is φ = 5256576.

The previous prime is 9994507. The next prime is 9994553. The reversal of 9994551 is 1554999.

It is a happy number.

It is not a de Polignac number, because 9994551 - 2¹⁰ = 9993527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9994553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14425 + ... + 15101.

It is an arithmetic number, because the mean of its divisors is an integer number (515280).

Almost surely, 2^9994551 is an apocalyptic number.

9994551 is a deficient number, since it is larger than the sum of its proper divisors (6494409).

9994551 is a wasteful number, since it uses less digits than its factorization.

9994551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its digits is 72900, while the sum is 42.

The square root of 9994551 is about 3161.4159802215. The cubic root of 9994551 is about 215.4043301780.

The spelling of 9994551 in words is "nine million, nine hundred ninety-four thousand, five hundred fifty-one".