423981745 has 16 divisors (see below), whose sum is σ = 558447552. Its totient is φ = 306452160.

The previous prime is 423981743. The next prime is 423981749. The reversal of 423981745 is 547189324.

It is not a de Polignac number, because 423981745 - 2¹ = 423981743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423981743) 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, 14682 + ... + 32611.

It is an arithmetic number, because the mean of its divisors is an integer number (34902972).

Almost surely, 2^423981745 is an apocalyptic number.

It is an amenable number.

423981745 is a deficient number, since it is larger than the sum of its proper divisors (134465807).

423981745 is a wasteful number, since it uses less digits than its factorization.

423981745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47472.

The product of its digits is 241920, while the sum is 43.

The square root of 423981745 is about 20590.8170066173. The cubic root of 423981745 is about 751.2463690863.

The spelling of 423981745 in words is "four hundred twenty-three million, nine hundred eighty-one thousand, seven hundred forty-five".