39394512 has 100 divisors (see below), whose sum is σ = 115455780. Its totient is φ = 12966912.

The previous prime is 39394501. The next prime is 39394517. The reversal of 39394512 is 21549393.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1498176 + 37896336 = 1224^2 + 6156^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39394517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 146314 + ... + 146582.

Almost surely, 2^39394512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39394512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57727890).

39394512 is an abundant number, since it is smaller than the sum of its proper divisors (76061268).

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

39394512 is a wasteful number, since it uses less digits than its factorization.

39394512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 387 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 39394512 is about 6276.5047598166. The cubic root of 39394512 is about 340.2607918386.

The spelling of 39394512 in words is "thirty-nine million, three hundred ninety-four thousand, five hundred twelve".