43404464421 has 48 divisors (see below), whose sum is σ = 68619492864. Its totient is φ = 26356948992.

The previous prime is 43404464387. The next prime is 43404464423. The reversal of 43404464421 is 12446440434.

43404464421 is a `hidden beast` number, since 4 + 3 + 4 + 0 + 4 + 4 + 644 + 2 + 1 = 666.

It is not a de Polignac number, because 43404464421 - 2⁶ = 43404464357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43404464423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 299685 + ... + 420261.

It is an arithmetic number, because the mean of its divisors is an integer number (1429572768).

Almost surely, 2^43404464421 is an apocalyptic number.

It is an amenable number.

43404464421 is a deficient number, since it is larger than the sum of its proper divisors (25215028443).

43404464421 is a wasteful number, since it uses less digits than its factorization.

43404464421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120690 (or 120687 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 36.

The spelling of 43404464421 in words is "forty-three billion, four hundred four million, four hundred sixty-four thousand, four hundred twenty-one".