43374721 has 16 divisors (see below), whose sum is σ = 48121920. Its totient is φ = 38848320.

The previous prime is 43374719. The next prime is 43374781. The reversal of 43374721 is 12747334.

It is a cyclic number.

It is not a de Polignac number, because 43374721 - 2¹ = 43374719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43374781) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 65490 + ... + 66148.

It is an arithmetic number, because the mean of its divisors is an integer number (3007620).

Almost surely, 2^43374721 is an apocalyptic number.

It is an amenable number.

43374721 is a deficient number, since it is larger than the sum of its proper divisors (4747199).

43374721 is a wasteful number, since it uses less digits than its factorization.

43374721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its digits is 14112, while the sum is 31.

The square root of 43374721 is about 6585.9487547353. The cubic root of 43374721 is about 351.3545360772.

The spelling of 43374721 in words is "forty-three million, three hundred seventy-four thousand, seven hundred twenty-one".