43138494 has 80 divisors (see below), whose sum is σ = 111804000. Its totient is φ = 12177216.

The previous prime is 43138489. The next prime is 43138507. The reversal of 43138494 is 49483134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 123432 + ... + 123780.

It is an arithmetic number, because the mean of its divisors is an integer number (1397550).

Almost surely, 2^43138494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43138494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55902000).

43138494 is an abundant number, since it is smaller than the sum of its proper divisors (68665506).

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

43138494 is a wasteful number, since it uses less digits than its factorization.

43138494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479 (or 470 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 43138494 is about 6567.9901035248. The cubic root of 43138494 is about 350.7155266838.

The spelling of 43138494 in words is "forty-three million, one hundred thirty-eight thousand, four hundred ninety-four".