418477421 has 2 divisors, whose sum is σ = 418477422. Its totient is φ = 418477420.

The previous prime is 418477403. The next prime is 418477439. The reversal of 418477421 is 124774814.

It is a balanced prime because it is at equal distance from previous prime (418477403) and next prime (418477439).

It can be written as a sum of positive squares in only one way, i.e., 386554921 + 31922500 = 19661^2 + 5650^2 .

It is a cyclic number.

It is not a de Polignac number, because 418477421 - 2⁶ = 418477357 is a prime.

It is a super-2 number, since 2×418477421² = 350246703773622482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418477471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209238710 + 209238711.

It is an arithmetic number, because the mean of its divisors is an integer number (209238711).

Almost surely, 2^418477421 is an apocalyptic number.

It is an amenable number.

418477421 is a deficient number, since it is larger than the sum of its proper divisors (1).

418477421 is an equidigital number, since it uses as much as digits as its factorization.

418477421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50176, while the sum is 38.

The square root of 418477421 is about 20456.7206805001. The cubic root of 418477421 is about 747.9811906058.

The spelling of 418477421 in words is "four hundred eighteen million, four hundred seventy-seven thousand, four hundred twenty-one".