9994409 has 8 divisors (see below), whose sum is σ = 10253568. Its totient is φ = 9737280.

The previous prime is 9994393. The next prime is 9994417. The reversal of 9994409 is 9044999.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9994409 - 2⁴ = 9994393 is a prime.

It is a super-2 number, since 2×9994409² = 199776422518562, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9994409.

It is not an unprimeable number, because it can be changed into a prime (9994469) 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, 15524 + ... + 16154.

It is an arithmetic number, because the mean of its divisors is an integer number (1281696).

Almost surely, 2^9994409 is an apocalyptic number.

It is an amenable number.

9994409 is a deficient number, since it is larger than the sum of its proper divisors (259159).

9994409 is a wasteful number, since it uses less digits than its factorization.

9994409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 9994409 is about 3161.3935218508. The cubic root of 9994409 is about 215.4033100368.

Multiplying 9994409 by its sum of digits (44), we get a triangular number (439753996 = T₂₉₆₅₆).

The spelling of 9994409 in words is "nine million, nine hundred ninety-four thousand, four hundred nine".