39988166 has 8 divisors (see below), whose sum is σ = 60231864. Its totient is φ = 19910880.

The previous prime is 39988139. The next prime is 39988181. The reversal of 39988166 is 66188993.

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

It is a super-3 number, since 3×39988166³ (a number of 24 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41000 + ... + 41963.

It is an arithmetic number, because the mean of its divisors is an integer number (7528983).

Almost surely, 2^39988166 is an apocalyptic number.

39988166 is a deficient number, since it is larger than the sum of its proper divisors (20243698).

39988166 is a wasteful number, since it uses less digits than its factorization.

39988166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83206.

The product of its digits is 559872, while the sum is 50.

The square root of 39988166 is about 6323.6196912844. The cubic root of 39988166 is about 341.9614595832.

The spelling of 39988166 in words is "thirty-nine million, nine hundred eighty-eight thousand, one hundred sixty-six".