166379457 has 4 divisors (see below), whose sum is σ = 221839280. Its totient is φ = 110919636.

The previous prime is 166379441. The next prime is 166379489. The reversal of 166379457 is 754973661.

It is a happy number.

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 not a de Polignac number, because 166379457 - 2⁴ = 166379441 is a prime.

It is a super-2 number, since 2×166379457² = 55364247423229698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166379407) 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, 27729907 + ... + 27729912.

It is an arithmetic number, because the mean of its divisors is an integer number (55459820).

Almost surely, 2^166379457 is an apocalyptic number.

It is an amenable number.

166379457 is a deficient number, since it is larger than the sum of its proper divisors (55459823).

166379457 is an equidigital number, since it uses as much as digits as its factorization.

166379457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55459822.

The product of its digits is 952560, while the sum is 48.

The square root of 166379457 is about 12898.8161084651. The cubic root of 166379457 is about 550.0049112509.

The spelling of 166379457 in words is "one hundred sixty-six million, three hundred seventy-nine thousand, four hundred fifty-seven".