423866647 has 2 divisors, whose sum is σ = 423866648. Its totient is φ = 423866646.

The previous prime is 423866603. The next prime is 423866659. The reversal of 423866647 is 746668324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423866647 - 2¹¹ = 423864599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423866597 and 423866606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423866147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211933323 + 211933324.

It is an arithmetic number, because the mean of its divisors is an integer number (211933324).

Almost surely, 2^423866647 is an apocalyptic number.

423866647 is the 11887-th hex number.

423866647 is a deficient number, since it is larger than the sum of its proper divisors (1).

423866647 is an equidigital number, since it uses as much as digits as its factorization.

423866647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 46.

The square root of 423866647 is about 20588.0219302390. The cubic root of 423866647 is about 751.1783828414.

The spelling of 423866647 in words is "four hundred twenty-three million, eight hundred sixty-six thousand, six hundred forty-seven".