419274599921 has 4 divisors (see below), whose sum is σ = 421945138932. Its totient is φ = 416604060912.

The previous prime is 419274599897. The next prime is 419274599923. The reversal of 419274599921 is 129995472914.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 158174039521 + 261100560400 = 397711^2 + 510980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-419274599921 is a prime.

It is a super-2 number, since 2×419274599921² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (419274599923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1335269270 + ... + 1335269583.

It is an arithmetic number, because the mean of its divisors is an integer number (105486284733).

Almost surely, 2^419274599921 is an apocalyptic number.

It is an amenable number.

419274599921 is a deficient number, since it is larger than the sum of its proper divisors (2670539011).

419274599921 is a wasteful number, since it uses less digits than its factorization.

419274599921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670539010.

The product of its digits is 14696640, while the sum is 62.

The spelling of 419274599921 in words is "four hundred nineteen billion, two hundred seventy-four million, five hundred ninety-nine thousand, nine hundred twenty-one".