424166881 has 4 divisors (see below), whose sum is σ = 449117892. Its totient is φ = 399215872.

The previous prime is 424166867. The next prime is 424166891. The reversal of 424166881 is 188661424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190688481 + 233478400 = 13809^2 + 15280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424166881 is a prime.

It is a super-2 number, since 2×424166881² = 359835085874536322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424166891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12475480 + ... + 12475513.

It is an arithmetic number, because the mean of its divisors is an integer number (112279473).

Almost surely, 2^424166881 is an apocalyptic number.

It is an amenable number.

424166881 is a deficient number, since it is larger than the sum of its proper divisors (24951011).

424166881 is a wasteful number, since it uses less digits than its factorization.

424166881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24951010.

The product of its digits is 73728, while the sum is 40.

The square root of 424166881 is about 20595.3121122259. The cubic root of 424166881 is about 751.3556996650.

The spelling of 424166881 in words is "four hundred twenty-four million, one hundred sixty-six thousand, eight hundred eighty-one".