166379417 has 4 divisors (see below), whose sum is σ = 170876196. Its totient is φ = 161882640.

The previous prime is 166379407. The next prime is 166379419. The reversal of 166379417 is 714973661.

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 124634896 + 41744521 = 11164^2 + 6461^2 .

It is a cyclic number.

It is not a de Polignac number, because 166379417 - 2¹⁰ = 166378393 is a prime.

It is a super-2 number, since 2×166379417² = 55364220802519778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166379419) 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, 2248334 + ... + 2248407.

It is an arithmetic number, because the mean of its divisors is an integer number (42719049).

Almost surely, 2^166379417 is an apocalyptic number.

It is an amenable number.

166379417 is a deficient number, since it is larger than the sum of its proper divisors (4496779).

166379417 is an equidigital number, since it uses as much as digits as its factorization.

166379417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4496778.

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

The square root of 166379417 is about 12898.8145579352. The cubic root of 166379417 is about 550.0048671746.

The spelling of 166379417 in words is "one hundred sixty-six million, three hundred seventy-nine thousand, four hundred seventeen".