9919419 has 4 divisors (see below), whose sum is σ = 13225896. Its totient is φ = 6612944.

The previous prime is 9919409. The next prime is 9919423. The reversal of 9919419 is 9149199.

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 9919419 - 2⁷ = 9919291 is a prime.

It is a super-2 number, since 2×9919419² = 196789746595122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9919409) 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, 1653234 + ... + 1653239.

It is an arithmetic number, because the mean of its divisors is an integer number (3306474).

Almost surely, 2^9919419 is an apocalyptic number.

9919419 is a deficient number, since it is larger than the sum of its proper divisors (3306477).

9919419 is a wasteful number, since it uses less digits than its factorization.

9919419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306476.

The product of its digits is 26244, while the sum is 42.

The square root of 9919419 is about 3149.5109144120. The cubic root of 9919419 is about 214.8632192917.

The spelling of 9919419 in words is "nine million, nine hundred nineteen thousand, four hundred nineteen".