40820873 has 4 divisors (see below), whose sum is σ = 42969360. Its totient is φ = 38672388.

The previous prime is 40820849. The next prime is 40820891. The reversal of 40820873 is 37802804.

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 40820873 - 2⁶ = 40820809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40820573) 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, 1074215 + ... + 1074252.

It is an arithmetic number, because the mean of its divisors is an integer number (10742340).

Almost surely, 2^40820873 is an apocalyptic number.

It is an amenable number.

40820873 is a deficient number, since it is larger than the sum of its proper divisors (2148487).

40820873 is a wasteful number, since it uses less digits than its factorization.

40820873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148486.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 40820873 is about 6389.1214576028. The cubic root of 40820873 is about 344.3188211757.

The spelling of 40820873 in words is "forty million, eight hundred twenty thousand, eight hundred seventy-three".