84829839 has 16 divisors (see below), whose sum is σ = 116975232. Its totient is φ = 54651168.

The previous prime is 84829763. The next prime is 84829859. The reversal of 84829839 is 93892848.

It is a happy number.

It is not a de Polignac number, because 84829839 - 2¹² = 84825743 is a prime.

It is a super-2 number, since 2×84829839² = 14392203169531842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84829791 and 84829800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84829859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6672 + ... + 14634.

It is an arithmetic number, because the mean of its divisors is an integer number (7310952).

Almost surely, 2^84829839 is an apocalyptic number.

84829839 is a deficient number, since it is larger than the sum of its proper divisors (32145393).

84829839 is a wasteful number, since it uses less digits than its factorization.

84829839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086.

The product of its digits is 995328, while the sum is 51.

The square root of 84829839 is about 9210.3115582482. The cubic root of 84829839 is about 439.3893716309.

The spelling of 84829839 in words is "eighty-four million, eight hundred twenty-nine thousand, eight hundred thirty-nine".