421787447347 has 8 divisors (see below), whose sum is σ = 482052888576. Its totient is φ = 361524529032.

The previous prime is 421787447317. The next prime is 421787447351. The reversal of 421787447347 is 743744787124.

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 421787447347 - 2³⁵ = 387427708979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421787447291 and 421787447300.

It is not an unprimeable number, because it can be changed into a prime (421787447317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257773 + ... + 953950.

It is an arithmetic number, because the mean of its divisors is an integer number (60256611072).

Almost surely, 2^421787447347 is an apocalyptic number.

421787447347 is a deficient number, since it is larger than the sum of its proper divisors (60265441229).

421787447347 is a wasteful number, since it uses less digits than its factorization.

421787447347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261457.

The product of its digits is 29503488, while the sum is 58.

The spelling of 421787447347 in words is "four hundred twenty-one billion, seven hundred eighty-seven million, four hundred forty-seven thousand, three hundred forty-seven".