84231385 has 16 divisors (see below), whose sum is σ = 116582400. Its totient is φ = 57226176.

The previous prime is 84231383. The next prime is 84231397. The reversal of 84231385 is 58313248.

It is a happy number.

It is not a de Polignac number, because 84231385 - 2¹ = 84231383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84231385.

It is not an unprimeable number, because it can be changed into a prime (84231383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7225 + ... + 14854.

It is an arithmetic number, because the mean of its divisors is an integer number (7286400).

Almost surely, 2^84231385 is an apocalyptic number.

It is an amenable number.

84231385 is a deficient number, since it is larger than the sum of its proper divisors (32351015).

84231385 is a wasteful number, since it uses less digits than its factorization.

84231385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22200.

The product of its digits is 23040, while the sum is 34.

The square root of 84231385 is about 9177.7657956607. The cubic root of 84231385 is about 438.3536703382.

The spelling of 84231385 in words is "eighty-four million, two hundred thirty-one thousand, three hundred eighty-five".