406788541 has 4 divisors (see below), whose sum is σ = 419910784. Its totient is φ = 393666300.

The previous prime is 406788527. The next prime is 406788583. The reversal of 406788541 is 145887604.

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 406788541 - 2¹³ = 406780349 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 (406788521) 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 3 ways as a sum of consecutive naturals, for example, 6561075 + ... + 6561136.

It is an arithmetic number, because the mean of its divisors is an integer number (104977696).

Almost surely, 2^406788541 is an apocalyptic number.

It is an amenable number.

406788541 is a deficient number, since it is larger than the sum of its proper divisors (13122243).

406788541 is a wasteful number, since it uses less digits than its factorization.

406788541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13122242.

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 406788541 is about 20168.9995041896. Note that the first 3 decimals coincide. The cubic root of 406788541 is about 740.9511393844.

The spelling of 406788541 in words is "four hundred six million, seven hundred eighty-eight thousand, five hundred forty-one".