39135380 has 12 divisors (see below), whose sum is σ = 82184340. Its totient is φ = 15654144.

The previous prime is 39135367. The next prime is 39135389. The reversal of 39135380 is 8353193.

It can be written as a sum of positive squares in 2 ways, for example, as 18957316 + 20178064 = 4354^2 + 4492^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39135389) 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, 978365 + ... + 978404.

It is an arithmetic number, because the mean of its divisors is an integer number (6848695).

Almost surely, 2^39135380 is an apocalyptic number.

It is an amenable number.

39135380 is an abundant number, since it is smaller than the sum of its proper divisors (43048960).

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

39135380 is a wasteful number, since it uses less digits than its factorization.

39135380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956778 (or 1956776 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 39135380 is about 6255.8276830488. The cubic root of 39135380 is about 339.5130861842.

The spelling of 39135380 in words is "thirty-nine million, one hundred thirty-five thousand, three hundred eighty".