418679993 has 2 divisors, whose sum is σ = 418679994. Its totient is φ = 418679992.

The previous prime is 418679983. The next prime is 418680001. The reversal of 418679993 is 399976814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 308072704 + 110607289 = 17552^2 + 10517^2 .

It is a cyclic number.

It is not a de Polignac number, because 418679993 - 2⁶ = 418679929 is a prime.

It is not a weakly prime, because it can be changed into another prime (418679983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209339996 + 209339997.

It is an arithmetic number, because the mean of its divisors is an integer number (209339997).

Almost surely, 2^418679993 is an apocalyptic number.

It is an amenable number.

418679993 is a deficient number, since it is larger than the sum of its proper divisors (1).

418679993 is an equidigital number, since it uses as much as digits as its factorization.

418679993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 56.

The square root of 418679993 is about 20461.6713149244. The cubic root of 418679993 is about 748.1018626707.

The spelling of 418679993 in words is "four hundred eighteen million, six hundred seventy-nine thousand, nine hundred ninety-three".