39389885 has 8 divisors (see below), whose sum is σ = 47405400. Its totient is φ = 31420224.

The previous prime is 39389881. The next prime is 39389923. The reversal of 39389885 is 58898393.

It is a happy number.

39389885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1110916 + 38278969 = 1054^2 + 6187^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 39389885 - 2² = 39389881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39389881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9542 + ... + 13031.

It is an arithmetic number, because the mean of its divisors is an integer number (5925675).

Almost surely, 2^39389885 is an apocalyptic number.

It is an amenable number.

39389885 is a deficient number, since it is larger than the sum of its proper divisors (8015515).

39389885 is a wasteful number, since it uses less digits than its factorization.

39389885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22927.

The product of its digits is 1866240, while the sum is 53.

The square root of 39389885 is about 6276.1361521242. The cubic root of 39389885 is about 340.2474697772.

The spelling of 39389885 in words is "thirty-nine million, three hundred eighty-nine thousand, eight hundred eighty-five".