39966233 has 4 divisors (see below), whose sum is σ = 39999780. Its totient is φ = 39932688.

The previous prime is 39966229. The next prime is 39966271. The reversal of 39966233 is 33266993.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33953929 + 6012304 = 5827^2 + 2452^2 .

It is a cyclic number.

It is not a de Polignac number, because 39966233 - 2² = 39966229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39966833) 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, 14918 + ... + 17391.

It is an arithmetic number, because the mean of its divisors is an integer number (9999945).

Almost surely, 2^39966233 is an apocalyptic number.

It is an amenable number.

39966233 is a deficient number, since it is larger than the sum of its proper divisors (33547).

39966233 is a wasteful number, since it uses less digits than its factorization.

39966233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33546.

The product of its digits is 157464, while the sum is 41.

The square root of 39966233 is about 6321.8852409704. The cubic root of 39966233 is about 341.8989276467.

The spelling of 39966233 in words is "thirty-nine million, nine hundred sixty-six thousand, two hundred thirty-three".