43973087 has 4 divisors (see below), whose sum is σ = 46287480. Its totient is φ = 41658696.

The previous prime is 43973063. The next prime is 43973089. The reversal of 43973087 is 78037934.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43973087 - 2⁶ = 43973023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43973089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157168 + ... + 1157205.

It is an arithmetic number, because the mean of its divisors is an integer number (11571870).

Almost surely, 2^43973087 is an apocalyptic number.

43973087 is a deficient number, since it is larger than the sum of its proper divisors (2314393).

43973087 is a wasteful number, since it uses less digits than its factorization.

43973087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314392.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 43973087 is about 6631.2206267021. The cubic root of 43973087 is about 352.9628398636.

The spelling of 43973087 in words is "forty-three million, nine hundred seventy-three thousand, eighty-seven".