83875791 has 16 divisors (see below), whose sum is σ = 114922080. Its totient is φ = 54382080.

The previous prime is 83875787. The next prime is 83875811. The reversal of 83875791 is 19757838.

It is not a de Polignac number, because 83875791 - 2² = 83875787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83875791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83875751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46971 + ... + 48723.

It is an arithmetic number, because the mean of its divisors is an integer number (7182630).

Almost surely, 2^83875791 is an apocalyptic number.

83875791 is a deficient number, since it is larger than the sum of its proper divisors (31046289).

83875791 is a wasteful number, since it uses less digits than its factorization.

83875791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186.

The product of its digits is 423360, while the sum is 48.

The square root of 83875791 is about 9158.3727266365. The cubic root of 83875791 is about 437.7359441336.

It can be divided in two parts, 83875 and 791, that added together give a triangular number (84666 = T₄₁₁).

The spelling of 83875791 in words is "eighty-three million, eight hundred seventy-five thousand, seven hundred ninety-one".