438299136 has 120 divisors (see below), whose sum is σ = 1380117024. Its totient is φ = 132802560.

The previous prime is 438299119. The next prime is 438299149. The reversal of 438299136 is 631992834.

It is a happy number.

It is a super-2 number, since 2×438299136² = 384212265236692992, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 438299091 and 438299100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46365 + ... + 55011.

Almost surely, 2^438299136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438299136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (690058512).

438299136 is an abundant number, since it is smaller than the sum of its proper divisors (941817888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438299136 is a wasteful number, since it uses less digits than its factorization.

438299136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8682 (or 8663 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 438299136 is about 20935.5949521383. The cubic root of 438299136 is about 759.6091804089.

The spelling of 438299136 in words is "four hundred thirty-eight million, two hundred ninety-nine thousand, one hundred thirty-six".