424343891 has 16 divisors (see below), whose sum is σ = 463155840. Its totient is φ = 387420480.

The previous prime is 424343873. The next prime is 424343893. The reversal of 424343891 is 198343424.

It is a de Polignac number, because none of the positive numbers 2^k-424343891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424343893) 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, 61376 + ... + 67938.

It is an arithmetic number, because the mean of its divisors is an integer number (28947240).

Almost surely, 2^424343891 is an apocalyptic number.

424343891 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

424343891 is a deficient number, since it is larger than the sum of its proper divisors (38811949).

424343891 is a wasteful number, since it uses less digits than its factorization.

424343891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6706.

The product of its digits is 82944, while the sum is 38.

The square root of 424343891 is about 20599.6090011437. The cubic root of 424343891 is about 751.4602017546.

The spelling of 424343891 in words is "four hundred twenty-four million, three hundred forty-three thousand, eight hundred ninety-one".