84326945 has 4 divisors (see below), whose sum is σ = 101192340. Its totient is φ = 67461552.

The previous prime is 84326941. The next prime is 84326971. The reversal of 84326945 is 54962348.

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 57214096 + 27112849 = 7564^2 + 5207^2 .

It is a cyclic number.

It is not a de Polignac number, because 84326945 - 2² = 84326941 is a prime.

It is a super-2 number, since 2×84326945² = 14222067306066050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84326941) by changing a digit.

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, 8432690 + ... + 8432699.

It is an arithmetic number, because the mean of its divisors is an integer number (25298085).

Almost surely, 2^84326945 is an apocalyptic number.

It is an amenable number.

84326945 is a deficient number, since it is larger than the sum of its proper divisors (16865395).

84326945 is a wasteful number, since it uses less digits than its factorization.

84326945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16865394.

The product of its digits is 207360, while the sum is 41.

The square root of 84326945 is about 9182.9703800023. The cubic root of 84326945 is about 438.5193775574.

The spelling of 84326945 in words is "eighty-four million, three hundred twenty-six thousand, nine hundred forty-five".