39172146 has 32 divisors (see below), whose sum is σ = 85001280. Its totient is φ = 11962944.

The previous prime is 39172123. The next prime is 39172163. The reversal of 39172146 is 64127193.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9036 + ... + 12648.

It is an arithmetic number, because the mean of its divisors is an integer number (2656290).

Almost surely, 2^39172146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39172146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42500640).

39172146 is an abundant number, since it is smaller than the sum of its proper divisors (45829134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39172146 is a wasteful number, since it uses less digits than its factorization.

39172146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770.

The product of its digits is 9072, while the sum is 33.

The square root of 39172146 is about 6258.7655332342. The cubic root of 39172146 is about 339.6193722032.

The spelling of 39172146 in words is "thirty-nine million, one hundred seventy-two thousand, one hundred forty-six".