408920197 has 16 divisors (see below), whose sum is σ = 492410880. Its totient is φ = 331995312.

The previous prime is 408920191. The next prime is 408920221. The reversal of 408920197 is 791029804.

It is a cyclic number.

It is not a de Polignac number, because 408920197 - 2¹¹ = 408918149 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 (408920191) 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 15 ways as a sum of consecutive naturals, for example, 4254 + ... + 28912.

It is an arithmetic number, because the mean of its divisors is an integer number (30775680).

Almost surely, 2^408920197 is an apocalyptic number.

It is an amenable number.

408920197 is a deficient number, since it is larger than the sum of its proper divisors (83490683).

408920197 is a wasteful number, since it uses less digits than its factorization.

408920197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24792.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 408920197 is about 20221.7753177114. The cubic root of 408920197 is about 742.2431309232.

The spelling of 408920197 in words is "four hundred eight million, nine hundred twenty thousand, one hundred ninety-seven".