89478419 has 2 divisors, whose sum is σ = 89478420. Its totient is φ = 89478418.

The previous prime is 89478409. The next prime is 89478437. The reversal of 89478419 is 91487498.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89478419 is a prime.

It is a super-2 number, since 2×89478419² = 16012774933479122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89478409) 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 as a sum of consecutive naturals, namely, 44739209 + 44739210.

It is an arithmetic number, because the mean of its divisors is an integer number (44739210).

Almost surely, 2^89478419 is an apocalyptic number.

89478419 is a deficient number, since it is larger than the sum of its proper divisors (1).

89478419 is an equidigital number, since it uses as much as digits as its factorization.

89478419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 50.

The square root of 89478419 is about 9459.3033041551. The cubic root of 89478419 is about 447.2730874189.

The spelling of 89478419 in words is "eighty-nine million, four hundred seventy-eight thousand, four hundred nineteen".