43867421 has 8 divisors (see below), whose sum is σ = 47908224. Its totient is φ = 39921840.

The previous prime is 43867363. The next prime is 43867423. The reversal of 43867421 is 12476834.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43867421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43867423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22841 + ... + 24686.

It is an arithmetic number, because the mean of its divisors is an integer number (5988528).

Almost surely, 2^43867421 is an apocalyptic number.

It is an amenable number.

43867421 is a deficient number, since it is larger than the sum of its proper divisors (4040803).

43867421 is a wasteful number, since it uses less digits than its factorization.

43867421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47611.

The product of its digits is 32256, while the sum is 35.

The square root of 43867421 is about 6623.2485231946. The cubic root of 43867421 is about 352.6798934238.

The spelling of 43867421 in words is "forty-three million, eight hundred sixty-seven thousand, four hundred twenty-one".