424139867 has 4 divisors (see below), whose sum is σ = 432142560. Its totient is φ = 416137176.

The previous prime is 424139857. The next prime is 424139921. The reversal of 424139867 is 768931424.

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

It is a cyclic number.

It is not a de Polignac number, because 424139867 - 2¹⁸ = 423877723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (424139857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4001267 + ... + 4001372.

It is an arithmetic number, because the mean of its divisors is an integer number (108035640).

Almost surely, 2^424139867 is an apocalyptic number.

424139867 is a deficient number, since it is larger than the sum of its proper divisors (8002693).

424139867 is an equidigital number, since it uses as much as digits as its factorization.

424139867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8002692.

The product of its digits is 290304, while the sum is 44.

The square root of 424139867 is about 20594.6562729267. The cubic root of 424139867 is about 751.3397487468.

The spelling of 424139867 in words is "four hundred twenty-four million, one hundred thirty-nine thousand, eight hundred sixty-seven".