84848409 has 6 divisors (see below), whose sum is σ = 122558826. Its totient is φ = 56565600.

The previous prime is 84848399. The next prime is 84848419. The reversal of 84848409 is 90484848.

It is an interprime number because it is at equal distance from previous prime (84848399) and next prime (84848419).

It can be written as a sum of positive squares in only one way, i.e., 61779600 + 23068809 = 7860^2 + 4803^2 .

It is not a de Polignac number, because 84848409 - 2¹⁵ = 84815641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84848419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4713792 + ... + 4713809.

It is an arithmetic number, because the mean of its divisors is an integer number (20426471).

Almost surely, 2^84848409 is an apocalyptic number.

It is an amenable number.

84848409 is a deficient number, since it is larger than the sum of its proper divisors (37710417).

84848409 is a wasteful number, since it uses less digits than its factorization.

84848409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9427607 (or 9427604 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 84848409 is about 9211.3196123031. The cubic root of 84848409 is about 439.4214313613.

The spelling of 84848409 in words is "eighty-four million, eight hundred forty-eight thousand, four hundred nine".