84408147 has 12 divisors (see below), whose sum is σ = 122855304. Its totient is φ = 55841760.

The previous prime is 84408143. The next prime is 84408169. The reversal of 84408147 is 74180448.

It is a happy number.

It is not a de Polignac number, because 84408147 - 2² = 84408143 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84408143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34618 + ... + 36975.

It is an arithmetic number, because the mean of its divisors is an integer number (10237942).

Almost surely, 2^84408147 is an apocalyptic number.

84408147 is a deficient number, since it is larger than the sum of its proper divisors (38447157).

84408147 is a wasteful number, since it uses less digits than its factorization.

84408147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71730 (or 71727 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 84408147 is about 9187.3906524105. The cubic root of 84408147 is about 438.6600887181.

The spelling of 84408147 in words is "eighty-four million, four hundred eight thousand, one hundred forty-seven".