43197988 has 6 divisors (see below), whose sum is σ = 75596486. Its totient is φ = 21598992.

The previous prime is 43197961. The next prime is 43197989. The reversal of 43197988 is 88979134.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 26811684 + 16386304 = 5178^2 + 4048^2 .

It is not an unprimeable number, because it can be changed into a prime (43197989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5399745 + ... + 5399752.

Almost surely, 2^43197988 is an apocalyptic number.

It is an amenable number.

43197988 is a deficient number, since it is larger than the sum of its proper divisors (32398498).

43197988 is a wasteful number, since it uses less digits than its factorization.

43197988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10799501 (or 10799499 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 43197988 is about 6572.5176302540. The cubic root of 43197988 is about 350.8766811642.

The spelling of 43197988 in words is "forty-three million, one hundred ninety-seven thousand, nine hundred eighty-eight".