84920547 has 4 divisors (see below), whose sum is σ = 113227400. Its totient is φ = 56613696.

The previous prime is 84920509. The next prime is 84920567. The reversal of 84920547 is 74502948.

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

It is not a de Polignac number, because 84920547 - 2¹¹ = 84918499 is a prime.

It is a super-2 number, since 2×84920547² = 14422998605558418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84920567) 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, 14153422 + ... + 14153427.

It is an arithmetic number, because the mean of its divisors is an integer number (28306850).

Almost surely, 2^84920547 is an apocalyptic number.

84920547 is a deficient number, since it is larger than the sum of its proper divisors (28306853).

84920547 is a wasteful number, since it uses less digits than its factorization.

84920547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28306852.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 84920547 is about 9215.2345059689. The cubic root of 84920547 is about 439.5459279168.

The spelling of 84920547 in words is "eighty-four million, nine hundred twenty thousand, five hundred forty-seven".