421794204649 has 8 divisors (see below), whose sum is σ = 440198906112. Its totient is φ = 403394988480.

The previous prime is 421794204577. The next prime is 421794204679. The reversal of 421794204649 is 946402497124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421794204649 - 2¹⁹ = 421793680361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421794204596 and 421794204605.

It is not an unprimeable number, because it can be changed into a prime (421794204679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213792 + ... + 1522129.

It is an arithmetic number, because the mean of its divisors is an integer number (55024863264).

Almost surely, 2^421794204649 is an apocalyptic number.

It is an amenable number.

421794204649 is a deficient number, since it is larger than the sum of its proper divisors (18404701463).

421794204649 is a wasteful number, since it uses less digits than its factorization.

421794204649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742647.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 421794204649 in words is "four hundred twenty-one billion, seven hundred ninety-four million, two hundred four thousand, six hundred forty-nine".