84637749 has 24 divisors (see below), whose sum is σ = 132526368. Its totient is φ = 47903520.

The previous prime is 84637739. The next prime is 84637757. The reversal of 84637749 is 94773648.

It is a happy number.

It is not a de Polignac number, because 84637749 - 2¹⁵ = 84604981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84637698 and 84637707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84637739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13039 + ... + 18419.

It is an arithmetic number, because the mean of its divisors is an integer number (5521932).

Almost surely, 2^84637749 is an apocalyptic number.

It is an amenable number.

84637749 is a deficient number, since it is larger than the sum of its proper divisors (47888619).

84637749 is a wasteful number, since it uses less digits than its factorization.

84637749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505 (or 5498 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 84637749 is about 9199.8776622301. The cubic root of 84637749 is about 439.0574676179.

The spelling of 84637749 in words is "eighty-four million, six hundred thirty-seven thousand, seven hundred forty-nine".