84748945 has 4 divisors (see below), whose sum is σ = 101698740. Its totient is φ = 67799152.

The previous prime is 84748931. The next prime is 84748967. The reversal of 84748945 is 54984748.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 67634176 + 17114769 = 8224^2 + 4137^2 .

It is a cyclic number.

It is not a de Polignac number, because 84748945 - 2⁵ = 84748913 is a prime.

It is a super-2 number, since 2×84748945² = 14364767357226050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8474890 + ... + 8474899.

It is an arithmetic number, because the mean of its divisors is an integer number (25424685).

Almost surely, 2^84748945 is an apocalyptic number.

It is an amenable number.

84748945 is a deficient number, since it is larger than the sum of its proper divisors (16949795).

84748945 is a wasteful number, since it uses less digits than its factorization.

84748945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16949794.

The product of its digits is 1290240, while the sum is 49.

The square root of 84748945 is about 9205.9190198480. The cubic root of 84748945 is about 439.2496595182.

The spelling of 84748945 in words is "eighty-four million, seven hundred forty-eight thousand, nine hundred forty-five".