84381505 has 16 divisors (see below), whose sum is σ = 110900160. Its totient is φ = 61253568.

The previous prime is 84381487. The next prime is 84381529. The reversal of 84381505 is 50518348.

It is a cyclic number.

It is not a de Polignac number, because 84381505 - 2¹¹ = 84379457 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7167 + ... + 14836.

It is an arithmetic number, because the mean of its divisors is an integer number (6931260).

Almost surely, 2^84381505 is an apocalyptic number.

It is an amenable number.

84381505 is a deficient number, since it is larger than the sum of its proper divisors (26518655).

84381505 is a wasteful number, since it uses less digits than its factorization.

84381505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22080.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 84381505 is about 9185.9406159631. The cubic root of 84381505 is about 438.6139319892.

The spelling of 84381505 in words is "eighty-four million, three hundred eighty-one thousand, five hundred five".