438091797 has 64 divisors (see below), whose sum is σ = 733501440. Its totient is φ = 228614400.

The previous prime is 438091793. The next prime is 438091807. The reversal of 438091797 is 797190834.

It is not a de Polignac number, because 438091797 - 2² = 438091793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438091793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 578343 + ... + 579099.

It is an arithmetic number, because the mean of its divisors is an integer number (11460960).

Almost surely, 2^438091797 is an apocalyptic number.

It is an amenable number.

438091797 is a deficient number, since it is larger than the sum of its proper divisors (295409643).

438091797 is a wasteful number, since it uses less digits than its factorization.

438091797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 381024, while the sum is 48.

The square root of 438091797 is about 20930.6425367211. The cubic root of 438091797 is about 759.4893828885.

The spelling of 438091797 in words is "four hundred thirty-eight million, ninety-one thousand, seven hundred ninety-seven".