84040939 has 8 divisors (see below), whose sum is σ = 86476320. Its totient is φ = 81624000.

The previous prime is 84040921. The next prime is 84040951. The reversal of 84040939 is 93904048.

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 84040939 - 2⁹ = 84040427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84040898 and 84040907.

It is not an unprimeable number, because it can be changed into a prime (84040909) 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, 4914 + ... + 13864.

It is an arithmetic number, because the mean of its divisors is an integer number (10809540).

Almost surely, 2^84040939 is an apocalyptic number.

84040939 is a deficient number, since it is larger than the sum of its proper divisors (2435381).

84040939 is a wasteful number, since it uses less digits than its factorization.

84040939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9221.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 84040939 is about 9167.3845234069. The cubic root of 84040939 is about 438.0230505025.

The spelling of 84040939 in words is "eighty-four million, forty thousand, nine hundred thirty-nine".