9419904 has 192 divisors, whose sum is σ = 31744440. Its totient is φ = 2654208.

The previous prime is 9419899. The next prime is 9419909. The reversal of 9419904 is 4099149.

It is an interprime number because it is at equal distance from previous prime (9419899) and next prime (9419909).

It can be written as a sum of positive squares in 4 ways, for example, as 9000000 + 419904 = 3000^2 + 648^2 .

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (9419909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254574 + ... + 254610.

Almost surely, 2^9419904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9419904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15872220).

9419904 is an abundant number, since it is smaller than the sum of its proper divisors (22324536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9419904 is a wasteful number, since it uses less digits than its factorization.

9419904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 9419904 is about 3069.1862113596. The cubic root of 9419904 is about 211.1942835918.

It can be divided in two parts, 9 and 419904, that multiplied together give a square (3779136 = 1944²).

The spelling of 9419904 in words is "nine million, four hundred nineteen thousand, nine hundred four".