43398472 has 16 divisors (see below), whose sum is σ = 87631740. Its totient is φ = 20030016.

The previous prime is 43398469. The next prime is 43398473. The reversal of 43398472 is 27489334.

It can be written as a sum of positive squares in 2 ways, for example, as 42954916 + 443556 = 6554^2 + 666^2 .

It is not an unprimeable number, because it can be changed into a prime (43398473) 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 3 ways as a sum of consecutive naturals, for example, 208543 + ... + 208750.

Almost surely, 2^43398472 is an apocalyptic number.

It is an amenable number.

43398472 is an abundant number, since it is smaller than the sum of its proper divisors (44233268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43398472 is a wasteful number, since it uses less digits than its factorization.

43398472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417312 (or 417308 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 43398472 is about 6587.7516650220. The cubic root of 43398472 is about 351.4186555971.

The spelling of 43398472 in words is "forty-three million, three hundred ninety-eight thousand, four hundred seventy-two".