43821374 has 8 divisors (see below), whose sum is σ = 67335408. Its totient is φ = 21376240.

The previous prime is 43821361. The next prime is 43821377. The reversal of 43821374 is 47312834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 43821374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43821377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267122 + ... + 267285.

It is an arithmetic number, because the mean of its divisors is an integer number (8416926).

Almost surely, 2^43821374 is an apocalyptic number.

43821374 is a deficient number, since it is larger than the sum of its proper divisors (23514034).

43821374 is a wasteful number, since it uses less digits than its factorization.

43821374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534450.

The product of its digits is 16128, while the sum is 32.

The square root of 43821374 is about 6619.7714462057. The cubic root of 43821374 is about 352.5564492197.

It can be divided in two parts, 438 and 21374, that added together give a palindrome (21812).

The spelling of 43821374 in words is "forty-three million, eight hundred twenty-one thousand, three hundred seventy-four".