166099739 has 8 divisors (see below), whose sum is σ = 182683200. Its totient is φ = 150060096.

The previous prime is 166099727. The next prime is 166099777. The reversal of 166099739 is 937990661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166099739 - 2⁴ = 166099723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166099939) 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 7 ways as a sum of consecutive naturals, for example, 135314 + ... + 136535.

It is an arithmetic number, because the mean of its divisors is an integer number (22835400).

Almost surely, 2^166099739 is an apocalyptic number.

166099739 is a deficient number, since it is larger than the sum of its proper divisors (16583461).

166099739 is a wasteful number, since it uses less digits than its factorization.

166099739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271909.

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 166099739 is about 12887.9687693600. The cubic root of 166099739 is about 549.6965146638.

The spelling of 166099739 in words is "one hundred sixty-six million, ninety-nine thousand, seven hundred thirty-nine".