84057147 has 12 divisors (see below), whose sum is σ = 122096520. Its totient is φ = 55723968.

The previous prime is 84057143. The next prime is 84057161. The reversal of 84057147 is 74175048.

84057147 is a `hidden beast` number, since 8 + 40 + 571 + 47 = 666.

It is not a de Polignac number, because 84057147 - 2² = 84057143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84057143) 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, 24478 + ... + 27699.

It is an arithmetic number, because the mean of its divisors is an integer number (10174710).

Almost surely, 2^84057147 is an apocalyptic number.

84057147 is a deficient number, since it is larger than the sum of its proper divisors (38039373).

84057147 is a wasteful number, since it uses less digits than its factorization.

84057147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52362 (or 52359 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 84057147 is about 9168.2684842886. The cubic root of 84057147 is about 438.0512074989.

The spelling of 84057147 in words is "eighty-four million, fifty-seven thousand, one hundred forty-seven".