43137089 has 4 divisors (see below), whose sum is σ = 44528640. Its totient is φ = 41745540.

The previous prime is 43137067. The next prime is 43137091. The reversal of 43137089 is 98073134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43137089 - 2¹² = 43132993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43137019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695729 + ... + 695790.

It is an arithmetic number, because the mean of its divisors is an integer number (11132160).

Almost surely, 2^43137089 is an apocalyptic number.

It is an amenable number.

43137089 is a deficient number, since it is larger than the sum of its proper divisors (1391551).

43137089 is a wasteful number, since it uses less digits than its factorization.

43137089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391550.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 43137089 is about 6567.8831445147. The cubic root of 43137089 is about 350.7117190972.

The spelling of 43137089 in words is "forty-three million, one hundred thirty-seven thousand, eighty-nine".