424065891 has 4 divisors (see below), whose sum is σ = 565421192. Its totient is φ = 282710592.

The previous prime is 424065809. The next prime is 424065893. The reversal of 424065891 is 198560424.

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

It is not a de Polignac number, because 424065891 - 2⁹ = 424065379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424065893) 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, 70677646 + ... + 70677651.

It is an arithmetic number, because the mean of its divisors is an integer number (141355298).

Almost surely, 2^424065891 is an apocalyptic number.

424065891 is a deficient number, since it is larger than the sum of its proper divisors (141355301).

424065891 is a wasteful number, since it uses less digits than its factorization.

424065891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141355300.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 424065891 is about 20592.8601947374. The cubic root of 424065891 is about 751.2960647758.

The spelling of 424065891 in words is "four hundred twenty-four million, sixty-five thousand, eight hundred ninety-one".