84824149 has 4 divisors (see below), whose sum is σ = 85314636. Its totient is φ = 84333664.

The previous prime is 84824137. The next prime is 84824177. The reversal of 84824149 is 94142848.

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 77123524 + 7700625 = 8782^2 + 2775^2 .

It is a cyclic number.

It is not a de Polignac number, because 84824149 - 2²¹ = 82726997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84824249) 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, 244984 + ... + 245329.

It is an arithmetic number, because the mean of its divisors is an integer number (21328659).

Almost surely, 2^84824149 is an apocalyptic number.

It is an amenable number.

84824149 is a deficient number, since it is larger than the sum of its proper divisors (490487).

84824149 is a wasteful number, since it uses less digits than its factorization.

84824149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490486.

The product of its digits is 73728, while the sum is 40.

The square root of 84824149 is about 9210.0026601516. The cubic root of 84824149 is about 439.3795473307.

It can be divided in two parts, 848241 and 49, that multiplied together give a square (41563809 = 6447²).

The spelling of 84824149 in words is "eighty-four million, eight hundred twenty-four thousand, one hundred forty-nine".