6978469 has 2 divisors, whose sum is σ = 6978470. Its totient is φ = 6978468.

The previous prime is 6978467. The next prime is 6978481. The reversal of 6978469 is 9648796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4255969 + 2722500 = 2063^2 + 1650^2 .

It is a cyclic number.

It is not a de Polignac number, because 6978469 - 2¹ = 6978467 is a prime.

It is a super-2 number, since 2×6978469² = 97398059167922, which contains 22 as substring.

Together with 6978467, it forms a pair of twin primes.

6978469 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6978463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3489234 + 3489235.

It is an arithmetic number, because the mean of its divisors is an integer number (3489235).

Almost surely, 2^6978469 is an apocalyptic number.

It is an amenable number.

6978469 is a deficient number, since it is larger than the sum of its proper divisors (1).

6978469 is an equidigital number, since it uses as much as digits as its factorization.

6978469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 6978469 is about 2641.6792008115. The cubic root of 6978469 is about 191.0967867421.

It can be divided in two parts, 6978 and 469, that added together give a palindrome (7447).

The spelling of 6978469 in words is "six million, nine hundred seventy-eight thousand, four hundred sixty-nine".