83629809 has 12 divisors (see below), whose sum is σ = 121928976. Its totient is φ = 55231512.

The previous prime is 83629807. The next prime is 83629853. The reversal of 83629809 is 90892638.

It is not a de Polignac number, because 83629809 - 2¹ = 83629807 is a prime.

It is a super-3 number, since 3×83629809³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83629801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42459 + ... + 44384.

It is an arithmetic number, because the mean of its divisors is an integer number (10160748).

Almost surely, 2^83629809 is an apocalyptic number.

It is an amenable number.

83629809 is a deficient number, since it is larger than the sum of its proper divisors (38299167).

83629809 is a wasteful number, since it uses less digits than its factorization.

83629809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86956 (or 86953 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 83629809 is about 9144.9335153406. The cubic root of 83629809 is about 437.3076099942.

The spelling of 83629809 in words is "eighty-three million, six hundred twenty-nine thousand, eight hundred nine".