83790971 has 4 divisors (see below), whose sum is σ = 91408344. Its totient is φ = 76173600.

The previous prime is 83790953. The next prime is 83790979. The reversal of 83790971 is 17909738.

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 83790971 - 2¹⁰ = 83789947 is a prime.

It is a super-2 number, since 2×83790971² = 14041853642245682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83790979) 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, 3808670 + ... + 3808691.

It is an arithmetic number, because the mean of its divisors is an integer number (22852086).

Almost surely, 2^83790971 is an apocalyptic number.

83790971 is a deficient number, since it is larger than the sum of its proper divisors (7617373).

83790971 is a wasteful number, since it uses less digits than its factorization.

83790971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7617372.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 83790971 is about 9153.7408200145. The cubic root of 83790971 is about 437.5883398211.

The spelling of 83790971 in words is "eighty-three million, seven hundred ninety thousand, nine hundred seventy-one".