94278419 has 2 divisors, whose sum is σ = 94278420. Its totient is φ = 94278418.

The previous prime is 94278307. The next prime is 94278421. The reversal of 94278419 is 91487249.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94278419 is a prime.

It is a super-2 number, since 2×94278419² = 17776840578279122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 94278421, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 94278419.

It is not a weakly prime, because it can be changed into another prime (94278469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47139209 + 47139210.

It is an arithmetic number, because the mean of its divisors is an integer number (47139210).

Almost surely, 2^94278419 is an apocalyptic number.

94278419 is a deficient number, since it is larger than the sum of its proper divisors (1).

94278419 is an equidigital number, since it uses as much as digits as its factorization.

94278419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 94278419 is about 9709.7074621226. The cubic root of 94278419 is about 455.1320616539.

The spelling of 94278419 in words is "ninety-four million, two hundred seventy-eight thousand, four hundred nineteen".