9904619 has 4 divisors (see below), whose sum is σ = 9921240. Its totient is φ = 9888000.

The previous prime is 9904613. The next prime is 9904621. The reversal of 9904619 is 9164099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9904619 - 2¹⁶ = 9839083 is a prime.

It is a super-2 number, since 2×9904619² = 196202955070322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9904613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7382 + ... + 8619.

It is an arithmetic number, because the mean of its divisors is an integer number (2480310).

Almost surely, 2^9904619 is an apocalyptic number.

9904619 is a deficient number, since it is larger than the sum of its proper divisors (16621).

9904619 is a wasteful number, since it uses less digits than its factorization.

9904619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16620.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 9904619 is about 3147.1604661981. The cubic root of 9904619 is about 214.7563058226.

It can be divided in two parts, 9904 and 619, that multiplied together give a square (6130576 = 2476²).

The spelling of 9904619 in words is "nine million, nine hundred four thousand, six hundred nineteen".