417661397 has 4 divisors (see below), whose sum is σ = 423382860. Its totient is φ = 411939936.

The previous prime is 417661379. The next prime is 417661417. The reversal of 417661397 is 793166714.

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 318479716 + 99181681 = 17846^2 + 9959^2 .

It is a cyclic number.

It is not a de Polignac number, because 417661397 - 2⁶ = 417661333 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 (417661337) 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, 2860622 + ... + 2860767.

It is an arithmetic number, because the mean of its divisors is an integer number (105845715).

Almost surely, 2^417661397 is an apocalyptic number.

It is an amenable number.

417661397 is a deficient number, since it is larger than the sum of its proper divisors (5721463).

417661397 is an equidigital number, since it uses as much as digits as its factorization.

417661397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721462.

The product of its digits is 190512, while the sum is 44.

The square root of 417661397 is about 20436.7658155590. The cubic root of 417661397 is about 747.4946906257.

The spelling of 417661397 in words is "four hundred seventeen million, six hundred sixty-one thousand, three hundred ninety-seven".