83207911 has 4 divisors (see below), whose sum is σ = 88102512. Its totient is φ = 78313312.

The previous prime is 83207893. The next prime is 83207939. The reversal of 83207911 is 11970238.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83207911 - 2¹⁵ = 83175143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83267911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2447275 + ... + 2447308.

It is an arithmetic number, because the mean of its divisors is an integer number (22025628).

Almost surely, 2^83207911 is an apocalyptic number.

83207911 is a deficient number, since it is larger than the sum of its proper divisors (4894601).

83207911 is a wasteful number, since it uses less digits than its factorization.

83207911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894600.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 83207911 is about 9121.8370408597. The cubic root of 83207911 is about 436.5709893390.

The spelling of 83207911 in words is "eighty-three million, two hundred seven thousand, nine hundred eleven".