84040385 has 16 divisors (see below), whose sum is σ = 118480320. Its totient is φ = 56418240.

The previous prime is 84040381. The next prime is 84040387. The reversal of 84040385 is 58304048.

It is not a de Polignac number, because 84040385 - 2² = 84040381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84040381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58055 + ... + 59484.

It is an arithmetic number, because the mean of its divisors is an integer number (7405020).

Almost surely, 2^84040385 is an apocalyptic number.

It is an amenable number.

84040385 is a deficient number, since it is larger than the sum of its proper divisors (34439935).

84040385 is a wasteful number, since it uses less digits than its factorization.

84040385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117568.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 84040385 is about 9167.3543075415. The cubic root of 84040385 is about 438.0220880141.

The spelling of 84040385 in words is "eighty-four million, forty thousand, three hundred eighty-five".