84870244 has 6 divisors (see below), whose sum is σ = 148522934. Its totient is φ = 42435120.

The previous prime is 84870241. The next prime is 84870257. The reversal of 84870244 is 44207848.

It can be written as a sum of positive squares in only one way, i.e., 78110244 + 6760000 = 8838^2 + 2600^2 .

It is not an unprimeable number, because it can be changed into a prime (84870241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10608777 + ... + 10608784.

Almost surely, 2^84870244 is an apocalyptic number.

It is an amenable number.

84870244 is a deficient number, since it is larger than the sum of its proper divisors (63652690).

84870244 is a wasteful number, since it uses less digits than its factorization.

84870244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21217565 (or 21217563 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 37.

The square root of 84870244 is about 9212.5047625497. The cubic root of 84870244 is about 439.4591218894.

The spelling of 84870244 in words is "eighty-four million, eight hundred seventy thousand, two hundred forty-four".