43940807 has 8 divisors (see below), whose sum is σ = 45209472. Its totient is φ = 42681600.

The previous prime is 43940803. The next prime is 43940821. The reversal of 43940807 is 70804934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43940807 - 2² = 43940803 is a prime.

It is a super-2 number, since 2×43940807² = 3861589039622498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43940803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7658 + ... + 12104.

It is an arithmetic number, because the mean of its divisors is an integer number (5651184).

Almost surely, 2^43940807 is an apocalyptic number.

43940807 is a deficient number, since it is larger than the sum of its proper divisors (1268665).

43940807 is a wasteful number, since it uses less digits than its factorization.

43940807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4729.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 43940807 is about 6628.7862388223. The cubic root of 43940807 is about 352.8764504351.

The spelling of 43940807 in words is "forty-three million, nine hundred forty thousand, eight hundred seven".