423561447 has 16 divisors (see below), whose sum is σ = 642804960. Its totient is φ = 275486400.

The previous prime is 423561427. The next prime is 423561449. The reversal of 423561447 is 744165324.

423561447 is a `hidden beast` number, since 4 + 2 + 35 + 614 + 4 + 7 = 666.

It is not a de Polignac number, because 423561447 - 2¹¹ = 423559399 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423561449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190204 + ... + 192417.

It is an arithmetic number, because the mean of its divisors is an integer number (40175310).

Almost surely, 2^423561447 is an apocalyptic number.

423561447 is a deficient number, since it is larger than the sum of its proper divisors (219243513).

423561447 is a wasteful number, since it uses less digits than its factorization.

423561447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382671 (or 382665 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 423561447 is about 20580.6085187003. The cubic root of 423561447 is about 750.9980472797.

The spelling of 423561447 in words is "four hundred twenty-three million, five hundred sixty-one thousand, four hundred forty-seven".