417311921 has 4 divisors (see below), whose sum is σ = 449412852. Its totient is φ = 385210992.

The previous prime is 417311887. The next prime is 417311933. The reversal of 417311921 is 129113714.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 103632400 + 313679521 = 10180^2 + 17711^2 .

It is a cyclic number.

It is not a de Polignac number, because 417311921 - 2¹⁰ = 417310897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (417311941) 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, 16050446 + ... + 16050471.

It is an arithmetic number, because the mean of its divisors is an integer number (112353213).

Almost surely, 2^417311921 is an apocalyptic number.

It is an amenable number.

417311921 is a deficient number, since it is larger than the sum of its proper divisors (32100931).

417311921 is a wasteful number, since it uses less digits than its factorization.

417311921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32100930.

The product of its digits is 1512, while the sum is 29.

The square root of 417311921 is about 20428.2138475198. The cubic root of 417311921 is about 747.2861450178.

The spelling of 417311921 in words is "four hundred seventeen million, three hundred eleven thousand, nine hundred twenty-one".