43920407 has 4 divisors (see below), whose sum is σ = 44070600. Its totient is φ = 43770216.

The previous prime is 43920403. The next prime is 43920421. The reversal of 43920407 is 70402934.

43920407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43920407 - 2² = 43920403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43920407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43920403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74657 + ... + 75242.

It is an arithmetic number, because the mean of its divisors is an integer number (11017650).

Almost surely, 2^43920407 is an apocalyptic number.

43920407 is a deficient number, since it is larger than the sum of its proper divisors (150193).

43920407 is a wasteful number, since it uses less digits than its factorization.

43920407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150192.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 43920407 is about 6627.2473169484. The cubic root of 43920407 is about 352.8218330654.

The spelling of 43920407 in words is "forty-three million, nine hundred twenty thousand, four hundred seven".