43398464 has 14 divisors (see below), whose sum is σ = 86118954. Its totient is φ = 21699200.

The previous prime is 43398461. The next prime is 43398469. The reversal of 43398464 is 46489334.

It can be written as a sum of positive squares in only one way, i.e., 25080064 + 18318400 = 5008^2 + 4280^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43398461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338987 + ... + 339114.

Almost surely, 2^43398464 is an apocalyptic number.

It is an amenable number.

43398464 is a deficient number, since it is larger than the sum of its proper divisors (42720490).

43398464 is an equidigital number, since it uses as much as digits as its factorization.

43398464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678113 (or 678103 counting only the distinct ones).

The product of its digits is 248832, while the sum is 41.

The square root of 43398464 is about 6587.7510578345. The cubic root of 43398464 is about 351.4186340038.

The spelling of 43398464 in words is "forty-three million, three hundred ninety-eight thousand, four hundred sixty-four".