83909506 has 8 divisors (see below), whose sum is σ = 126978444. Its totient is φ = 41583360.

The previous prime is 83909503. The next prime is 83909509. The reversal of 83909506 is 60590938.

It is an interprime number because it is at equal distance from previous prime (83909503) and next prime (83909509).

It can be written as a sum of positive squares in 2 ways, for example, as 83814025 + 95481 = 9155^2 + 309^2 .

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

It is not an unprimeable number, because it can be changed into a prime (83909503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185415 + ... + 185866.

Almost surely, 2^83909506 is an apocalyptic number.

83909506 is a deficient number, since it is larger than the sum of its proper divisors (43068938).

83909506 is a wasteful number, since it uses less digits than its factorization.

83909506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371396.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 83909506 is about 9160.2132071257. The cubic root of 83909506 is about 437.7945875562.

The spelling of 83909506 in words is "eighty-three million, nine hundred nine thousand, five hundred six".