166896439 has 4 divisors (see below), whose sum is σ = 167073624. Its totient is φ = 166719256.

The previous prime is 166896413. The next prime is 166896481. The reversal of 166896439 is 934698661.

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

It is a cyclic number.

It is not a de Polignac number, because 166896439 - 2⁵ = 166896407 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 (166896409) 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, 87172 + ... + 89065.

It is an arithmetic number, because the mean of its divisors is an integer number (41768406).

Almost surely, 2^166896439 is an apocalyptic number.

166896439 is a deficient number, since it is larger than the sum of its proper divisors (177185).

166896439 is an equidigital number, since it uses as much as digits as its factorization.

166896439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177184.

The product of its digits is 1679616, while the sum is 52.

The square root of 166896439 is about 12918.8404665434. The cubic root of 166896439 is about 550.5739891966.

The spelling of 166896439 in words is "one hundred sixty-six million, eight hundred ninety-six thousand, four hundred thirty-nine".