84039147 has 16 divisors (see below), whose sum is σ = 131056000. Its totient is φ = 53077032.

The previous prime is 84039121. The next prime is 84039161. The reversal of 84039147 is 74193048.

It is a happy number.

It is not a de Polignac number, because 84039147 - 2⁶ = 84039083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84039547) 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 15 ways as a sum of consecutive naturals, for example, 81397 + ... + 82422.

It is an arithmetic number, because the mean of its divisors is an integer number (8191000).

Almost surely, 2^84039147 is an apocalyptic number.

84039147 is a deficient number, since it is larger than the sum of its proper divisors (47016853).

84039147 is a wasteful number, since it uses less digits than its factorization.

84039147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163847 (or 163841 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 84039147 is about 9167.2867850853. The cubic root of 84039147 is about 438.0199371672.

The spelling of 84039147 in words is "eighty-four million, thirty-nine thousand, one hundred forty-seven".