438427631 has 2 divisors, whose sum is σ = 438427632. Its totient is φ = 438427630.

The previous prime is 438427601. The next prime is 438427651. The reversal of 438427631 is 136724834.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 438427631 - 2¹⁴ = 438411247 is a prime.

It is a super-2 number, since 2×438427631² = 384437575248544322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438427601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219213815 + 219213816.

It is an arithmetic number, because the mean of its divisors is an integer number (219213816).

Almost surely, 2^438427631 is an apocalyptic number.

438427631 is a deficient number, since it is larger than the sum of its proper divisors (1).

438427631 is an equidigital number, since it uses as much as digits as its factorization.

438427631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 38.

The square root of 438427631 is about 20938.6635437890. The cubic root of 438427631 is about 759.6834040284.

The spelling of 438427631 in words is "four hundred thirty-eight million, four hundred twenty-seven thousand, six hundred thirty-one".