419974109 has 2 divisors, whose sum is σ = 419974110. Its totient is φ = 419974108.

The previous prime is 419974097. The next prime is 419974123. The reversal of 419974109 is 901479914.

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., 396886084 + 23088025 = 19922^2 + 4805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-419974109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 419974109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (419974129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209987054 + 209987055.

It is an arithmetic number, because the mean of its divisors is an integer number (209987055).

Almost surely, 2^419974109 is an apocalyptic number.

It is an amenable number.

419974109 is a deficient number, since it is larger than the sum of its proper divisors (1).

419974109 is an equidigital number, since it uses as much as digits as its factorization.

419974109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 419974109 is about 20493.2698464642. The cubic root of 419974109 is about 748.8718499616.

The spelling of 419974109 in words is "four hundred nineteen million, nine hundred seventy-four thousand, one hundred nine".