423867557 has 8 divisors (see below), whose sum is σ = 441792000. Its totient is φ = 406208880.

The previous prime is 423867551. The next prime is 423867583. The reversal of 423867557 is 755768324.

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 423867557 - 2⁴ = 423867541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423867551) 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, 63182 + ... + 69567.

It is an arithmetic number, because the mean of its divisors is an integer number (55224000).

Almost surely, 2^423867557 is an apocalyptic number.

It is an amenable number.

423867557 is a deficient number, since it is larger than the sum of its proper divisors (17924443).

423867557 is a wasteful number, since it uses less digits than its factorization.

423867557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132883.

The product of its digits is 1411200, while the sum is 47.

The square root of 423867557 is about 20588.0440304561. The cubic root of 423867557 is about 751.1789204098.

It can be divided in two parts, 423867 and 557, that added together give a palindrome (424424).

The spelling of 423867557 in words is "four hundred twenty-three million, eight hundred sixty-seven thousand, five hundred fifty-seven".