84749965 has 4 divisors (see below), whose sum is σ = 101699964. Its totient is φ = 67799968.

The previous prime is 84749953. The next prime is 84749969. The reversal of 84749965 is 56994748.

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 32592681 + 52157284 = 5709^2 + 7222^2 .

It is a cyclic number.

It is not a de Polignac number, because 84749965 - 2⁵ = 84749933 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 (84749969) 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 3 ways as a sum of consecutive naturals, for example, 8474992 + ... + 8475001.

It is an arithmetic number, because the mean of its divisors is an integer number (25424991).

Almost surely, 2^84749965 is an apocalyptic number.

It is an amenable number.

84749965 is a deficient number, since it is larger than the sum of its proper divisors (16949999).

84749965 is a wasteful number, since it uses less digits than its factorization.

84749965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16949998.

The product of its digits is 2177280, while the sum is 52.

The square root of 84749965 is about 9205.9744188217. The cubic root of 84749965 is about 439.2514217145.

The spelling of 84749965 in words is "eighty-four million, seven hundred forty-nine thousand, nine hundred sixty-five".