43962138 has 48 divisors (see below), whose sum is σ = 104457600. Its totient is φ = 13251840.

The previous prime is 43962109. The next prime is 43962161. The reversal of 43962138 is 83126934.

43962138 is a `hidden beast` number, since 439 + 6 + 213 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46858 + ... + 47786.

It is an arithmetic number, because the mean of its divisors is an integer number (2176200).

Almost surely, 2^43962138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43962138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52228800).

43962138 is an abundant number, since it is smaller than the sum of its proper divisors (60495462).

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

43962138 is a wasteful number, since it uses less digits than its factorization.

43962138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187 (or 1184 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 43962138 is about 6630.3950108572. The cubic root of 43962138 is about 352.9335423153.

It can be divided in two parts, 43962 and 138, that added together give a square (44100 = 210²).

The spelling of 43962138 in words is "forty-three million, nine hundred sixty-two thousand, one hundred thirty-eight".