9878419 has 2 divisors, whose sum is σ = 9878420. Its totient is φ = 9878418.

The previous prime is 9878399. The next prime is 9878467. The reversal of 9878419 is 9148789.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9878419 - 2⁷ = 9878291 is a prime.

It is a super-2 number, since 2×9878419² = 195166323879122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9878489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4939209 + 4939210.

It is an arithmetic number, because the mean of its divisors is an integer number (4939210).

Almost surely, 2^9878419 is an apocalyptic number.

9878419 is a deficient number, since it is larger than the sum of its proper divisors (1).

9878419 is an equidigital number, since it uses as much as digits as its factorization.

9878419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 46.

The square root of 9878419 is about 3142.9952274860. The cubic root of 9878419 is about 214.5667786351.

The spelling of 9878419 in words is "nine million, eight hundred seventy-eight thousand, four hundred nineteen".