94171421 has 2 divisors, whose sum is σ = 94171422. Its totient is φ = 94171420.

The previous prime is 94171393. The next prime is 94171463. The reversal of 94171421 is 12417149.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61795321 + 32376100 = 7861^2 + 5690^2 .

It is an emirp because it is prime and its reverse (12417149) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94171421 - 2²² = 89977117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94101421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47085710 + 47085711.

It is an arithmetic number, because the mean of its divisors is an integer number (47085711).

Almost surely, 2^94171421 is an apocalyptic number.

It is an amenable number.

94171421 is a deficient number, since it is larger than the sum of its proper divisors (1).

94171421 is an equidigital number, since it uses as much as digits as its factorization.

94171421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The square root of 94171421 is about 9704.1960511935. The cubic root of 94171421 is about 454.9598177291.

The spelling of 94171421 in words is "ninety-four million, one hundred seventy-one thousand, four hundred twenty-one".