83820629 has 4 divisors (see below), whose sum is σ = 84030060. Its totient is φ = 83611200.

The previous prime is 83820623. The next prime is 83820637. The reversal of 83820629 is 92602838.

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 59830225 + 23990404 = 7735^2 + 4898^2 .

It is a cyclic number.

It is not a de Polignac number, because 83820629 - 2¹² = 83816533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83820592 and 83820601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83820623) 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, 104114 + ... + 104915.

It is an arithmetic number, because the mean of its divisors is an integer number (21007515).

Almost surely, 2^83820629 is an apocalyptic number.

It is an amenable number.

83820629 is a deficient number, since it is larger than the sum of its proper divisors (209431).

83820629 is a wasteful number, since it uses less digits than its factorization.

83820629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209430.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 83820629 is about 9155.3606701211. The cubic root of 83820629 is about 437.6399621854.

The spelling of 83820629 in words is "eighty-three million, eight hundred twenty thousand, six hundred twenty-nine".