83509077 has 4 divisors (see below), whose sum is σ = 111345440. Its totient is φ = 55672716.

The previous prime is 83509073. The next prime is 83509081. The reversal of 83509077 is 77090538.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (83509073) and next prime (83509081).

It is not a de Polignac number, because 83509077 - 2² = 83509073 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 (83509073) 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, 13918177 + ... + 13918182.

It is an arithmetic number, because the mean of its divisors is an integer number (27836360).

Almost surely, 2^83509077 is an apocalyptic number.

It is an amenable number.

83509077 is a deficient number, since it is larger than the sum of its proper divisors (27836363).

83509077 is a wasteful number, since it uses less digits than its factorization.

83509077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27836362.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 83509077 is about 9138.3300990936. The cubic root of 83509077 is about 437.0970692386.

The spelling of 83509077 in words is "eighty-three million, five hundred nine thousand, seventy-seven".