438525381 has 32 divisors (see below), whose sum is σ = 694003968. Its totient is φ = 241090560.

The previous prime is 438525379. The next prime is 438525391. The reversal of 438525381 is 183525834.

It is not a de Polignac number, because 438525381 - 2¹ = 438525379 is a prime.

It is a super-2 number, since 2×438525381² = 384609019562390322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438525331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59365 + ... + 66341.

It is an arithmetic number, because the mean of its divisors is an integer number (21687624).

Almost surely, 2^438525381 is an apocalyptic number.

438525381 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

438525381 is a deficient number, since it is larger than the sum of its proper divisors (255478587).

438525381 is a wasteful number, since it uses less digits than its factorization.

438525381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101.

The product of its digits is 115200, while the sum is 39.

The square root of 438525381 is about 20940.9976123393. The cubic root of 438525381 is about 759.7398584498.

The spelling of 438525381 in words is "four hundred thirty-eight million, five hundred twenty-five thousand, three hundred eighty-one".