43394464 has 12 divisors (see below), whose sum is σ = 85432914. Its totient is φ = 21697216.

The previous prime is 43394459. The next prime is 43394467. The reversal of 43394464 is 46449334.

It can be written as a sum of positive squares in only one way, i.e., 42354064 + 1040400 = 6508^2 + 1020^2 .

It is not an unprimeable number, because it can be changed into a prime (43394467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678007 + ... + 678070.

Almost surely, 2^43394464 is an apocalyptic number.

It is an amenable number.

43394464 is a deficient number, since it is larger than the sum of its proper divisors (42038450).

43394464 is a wasteful number, since it uses less digits than its factorization.

43394464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356087 (or 1356079 counting only the distinct ones).

The product of its digits is 124416, while the sum is 37.

The square root of 43394464 is about 6587.4474570960. The cubic root of 43394464 is about 351.4078370186.

The spelling of 43394464 in words is "forty-three million, three hundred ninety-four thousand, four hundred sixty-four".