418979969 has 2 divisors, whose sum is σ = 418979970. Its totient is φ = 418979968.

The previous prime is 418979959. The next prime is 418980013. The reversal of 418979969 is 969979814.

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., 363283600 + 55696369 = 19060^2 + 7463^2 .

It is a cyclic number.

It is not a de Polignac number, because 418979969 - 2¹² = 418975873 is a prime.

It is a super-2 number, since 2×418979969² = 351088428846481922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (418979959) 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, 209489984 + 209489985.

It is an arithmetic number, because the mean of its divisors is an integer number (209489985).

Almost surely, 2^418979969 is an apocalyptic number.

It is an amenable number.

418979969 is a deficient number, since it is larger than the sum of its proper divisors (1).

418979969 is an equidigital number, since it uses as much as digits as its factorization.

418979969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 62.

The square root of 418979969 is about 20469.0001954175. Note that the first 3 decimals coincide. The cubic root of 418979969 is about 748.2804867860.

The spelling of 418979969 in words is "four hundred eighteen million, nine hundred seventy-nine thousand, nine hundred sixty-nine".