83434785 has 32 divisors (see below), whose sum is σ = 153619200. Its totient is φ = 37878528.

The previous prime is 83434753. The next prime is 83434829. The reversal of 83434785 is 58743438.

It is not a de Polignac number, because 83434785 - 2⁵ = 83434753 is a prime.

It is a super-2 number, since 2×83434785² = 13922726695992450, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 12979 + ... + 18311.

It is an arithmetic number, because the mean of its divisors is an integer number (4800600).

Almost surely, 2^83434785 is an apocalyptic number.

It is an amenable number.

83434785 is a deficient number, since it is larger than the sum of its proper divisors (70184415).

83434785 is a wasteful number, since it uses less digits than its factorization.

83434785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5497.

The product of its digits is 322560, while the sum is 42.

The square root of 83434785 is about 9134.2643381939. The cubic root of 83434785 is about 436.9674128748.

The spelling of 83434785 in words is "eighty-three million, four hundred thirty-four thousand, seven hundred eighty-five".