85914421 has 2 divisors, whose sum is σ = 85914422. Its totient is φ = 85914420.

The previous prime is 85914419. The next prime is 85914427. The reversal of 85914421 is 12441958.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64883025 + 21031396 = 8055^2 + 4586^2 .

It is a cyclic number.

It is not a de Polignac number, because 85914421 - 2¹ = 85914419 is a prime.

Together with 85914419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85914427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42957210 + 42957211.

It is an arithmetic number, because the mean of its divisors is an integer number (42957211).

Almost surely, 2^85914421 is an apocalyptic number.

It is an amenable number.

85914421 is a deficient number, since it is larger than the sum of its proper divisors (1).

85914421 is an equidigital number, since it uses as much as digits as its factorization.

85914421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 34.

The square root of 85914421 is about 9269.0032365945. The cubic root of 85914421 is about 441.2540344229.

The spelling of 85914421 in words is "eighty-five million, nine hundred fourteen thousand, four hundred twenty-one".