43702989 has 16 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 26437760.

The previous prime is 43702949. The next prime is 43702999. The reversal of 43702989 is 98920734.

It is a cyclic number.

It is not a de Polignac number, because 43702989 - 2⁷ = 43702861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43702989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43702949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25879 + ... + 27515.

It is an arithmetic number, because the mean of its divisors is an integer number (3980340).

Almost surely, 2^43702989 is an apocalyptic number.

It is an amenable number.

43702989 is a deficient number, since it is larger than the sum of its proper divisors (19982451).

43702989 is a wasteful number, since it uses less digits than its factorization.

43702989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 43702989 is about 6610.8236249351. The cubic root of 43702989 is about 352.2386816331.

The spelling of 43702989 in words is "forty-three million, seven hundred two thousand, nine hundred eighty-nine".