6622939 has 2 divisors, whose sum is σ = 6622940. Its totient is φ = 6622938.

The previous prime is 6622907. The next prime is 6622961. The reversal of 6622939 is 9392266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6622939 - 2⁵ = 6622907 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 6⁸ + 2¹³ + 2¹⁵ + 9⁵ + 3¹⁴ + 9⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 6622898 and 6622907.

It is not a weakly prime, because it can be changed into another prime (6622999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311469 + 3311470.

It is an arithmetic number, because the mean of its divisors is an integer number (3311470).

Almost surely, 2^6622939 is an apocalyptic number.

6622939 is a deficient number, since it is larger than the sum of its proper divisors (1).

6622939 is an equidigital number, since it uses as much as digits as its factorization.

6622939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 37.

The square root of 6622939 is about 2573.5071400717. The cubic root of 6622939 is about 187.7948097038.

It can be divided in two parts, 66 and 22939, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 6622939 in words is "six million, six hundred twenty-two thousand, nine hundred thirty-nine".