8426939 has 2 divisors, whose sum is σ = 8426940. Its totient is φ = 8426938.

The previous prime is 8426903. The next prime is 8426953. The reversal of 8426939 is 9396248.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8426939 - 2¹⁶ = 8361403 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 8⁵ + 4⁶ + 2²³ + 6⁴ + 9 + 3⁴ + 9² .

It is a junction number, because it is equal to n+sod(n) for n = 8426896 and 8426905.

It is not a weakly prime, because it can be changed into another prime (8426969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4213469 + 4213470.

It is an arithmetic number, because the mean of its divisors is an integer number (4213470).

Almost surely, 2^8426939 is an apocalyptic number.

8426939 is a deficient number, since it is larger than the sum of its proper divisors (1).

8426939 is an equidigital number, since it uses as much as digits as its factorization.

8426939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 8426939 is about 2902.9190481307. The cubic root of 8426939 is about 203.4963466273.

The spelling of 8426939 in words is "eight million, four hundred twenty-six thousand, nine hundred thirty-nine".