84890147 has 4 divisors (see below), whose sum is σ = 84909120. Its totient is φ = 84871176.

The previous prime is 84890137. The next prime is 84890207. The reversal of 84890147 is 74109848.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84890147 - 2¹² = 84886051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84890107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1358 + ... + 13100.

It is an arithmetic number, because the mean of its divisors is an integer number (21227280).

Almost surely, 2^84890147 is an apocalyptic number.

84890147 is a deficient number, since it is larger than the sum of its proper divisors (18973).

84890147 is a wasteful number, since it uses less digits than its factorization.

84890147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18972.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 84890147 is about 9213.5849157643. The cubic root of 84890147 is about 439.4934718605.

The spelling of 84890147 in words is "eighty-four million, eight hundred ninety thousand, one hundred forty-seven".