84442769 has 8 divisors (see below), whose sum is σ = 86861160. Its totient is φ = 82031616.

The previous prime is 84442759. The next prime is 84442801. The reversal of 84442769 is 96724448.

It can be written as a sum of positive squares in 4 ways, for example, as 53217025 + 31225744 = 7295^2 + 5588^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84442769 - 2⁸ = 84442513 is a prime.

It is a super-2 number, since 2×84442769² = 14261162472774722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84442759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29297 + ... + 32049.

It is an arithmetic number, because the mean of its divisors is an integer number (10857645).

Almost surely, 2^84442769 is an apocalyptic number.

It is an amenable number.

84442769 is a deficient number, since it is larger than the sum of its proper divisors (2418391).

84442769 is a wasteful number, since it uses less digits than its factorization.

84442769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3619.

The product of its digits is 387072, while the sum is 44.

The square root of 84442769 is about 9189.2746721382. The cubic root of 84442769 is about 438.7200561270.

The spelling of 84442769 in words is "eighty-four million, four hundred forty-two thousand, seven hundred sixty-nine".