8401427 has 2 divisors, whose sum is σ = 8401428. Its totient is φ = 8401426.

The previous prime is 8401411. The next prime is 8401429. The reversal of 8401427 is 7241048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8401427 - 2⁴ = 8401411 is a prime.

Together with 8401429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8401396 and 8401405.

It is not a weakly prime, because it can be changed into another prime (8401429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200713 + 4200714.

It is an arithmetic number, because the mean of its divisors is an integer number (4200714).

Almost surely, 2^8401427 is an apocalyptic number.

8401427 is a deficient number, since it is larger than the sum of its proper divisors (1).

8401427 is an equidigital number, since it uses as much as digits as its factorization.

8401427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 8401427 is about 2898.5215196717. The cubic root of 8401427 is about 203.2907818033.

The spelling of 8401427 in words is "eight million, four hundred one thousand, four hundred twenty-seven".