423444457 has 16 divisors (see below), whose sum is σ = 447552000. Its totient is φ = 400063104.

The previous prime is 423444451. The next prime is 423444499. The reversal of 423444457 is 754444324.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423444457 is a prime.

It is a Duffinian number.

Its product of digits (215040) is a multiple of the sum of its prime divisors (1680).

It is not an unprimeable number, because it can be changed into a prime (423444451) 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 15 ways as a sum of consecutive naturals, for example, 293544 + ... + 294982.

It is an arithmetic number, because the mean of its divisors is an integer number (27972000).

Almost surely, 2^423444457 is an apocalyptic number.

It is an amenable number.

423444457 is a deficient number, since it is larger than the sum of its proper divisors (24107543).

423444457 is a wasteful number, since it uses less digits than its factorization.

423444457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680.

The product of its digits is 215040, while the sum is 37.

The square root of 423444457 is about 20577.7660838100. The cubic root of 423444457 is about 750.9288976498.

The spelling of 423444457 in words is "four hundred twenty-three million, four hundred forty-four thousand, four hundred fifty-seven".