39147890 has 16 divisors (see below), whose sum is σ = 70664832. Its totient is φ = 15615024.

The previous prime is 39147881. The next prime is 39147893. The reversal of 39147890 is 9874193.

It is a happy number.

39147890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (39147893) 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, 1664 + ... + 9003.

It is an arithmetic number, because the mean of its divisors is an integer number (4416552).

Almost surely, 2^39147890 is an apocalyptic number.

39147890 is a deficient number, since it is larger than the sum of its proper divisors (31516942).

39147890 is a wasteful number, since it uses less digits than its factorization.

39147890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11041.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 39147890 is about 6256.8274708513. The cubic root of 39147890 is about 339.5492585362.

The spelling of 39147890 in words is "thirty-nine million, one hundred forty-seven thousand, eight hundred ninety".