43849638 has 48 divisors (see below), whose sum is σ = 113308416. Its totient is φ = 11982960.

The previous prime is 43849633. The next prime is 43849643. The reversal of 43849638 is 83694834.

43849638 is a `hidden beast` number, since 4 + 3 + 8 + 4 + 9 + 638 = 666.

It is an interprime number because it is at equal distance from previous prime (43849633) and next prime (43849643).

It is a junction number, because it is equal to n+sod(n) for n = 43849593 and 43849602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43849633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4668 + ... + 10463.

It is an arithmetic number, because the mean of its divisors is an integer number (2360592).

Almost surely, 2^43849638 is an apocalyptic number.

43849638 is an abundant number, since it is smaller than the sum of its proper divisors (69458778).

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

43849638 is a wasteful number, since it uses less digits than its factorization.

43849638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15169 (or 15166 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 43849638 is about 6621.9059189934. The cubic root of 43849638 is about 352.6322304577.

The spelling of 43849638 in words is "forty-three million, eight hundred forty-nine thousand, six hundred thirty-eight".