43621412 has 6 divisors (see below), whose sum is σ = 76337478. Its totient is φ = 21810704.

The previous prime is 43621399. The next prime is 43621429. The reversal of 43621412 is 21412634.

It can be written as a sum of positive squares in only one way, i.e., 43375396 + 246016 = 6586^2 + 496^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5452673 + ... + 5452680.

It is an arithmetic number, because the mean of its divisors is an integer number (12722913).

Almost surely, 2^43621412 is an apocalyptic number.

It is an amenable number.

43621412 is a deficient number, since it is larger than the sum of its proper divisors (32716066).

43621412 is a wasteful number, since it uses less digits than its factorization.

43621412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10905357 (or 10905355 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 43621412 is about 6604.6507856207. The cubic root of 43621412 is about 352.0193795288.

The spelling of 43621412 in words is "forty-three million, six hundred twenty-one thousand, four hundred twelve".