83976769 has 4 divisors (see below), whose sum is σ = 84108420. Its totient is φ = 83845120.

The previous prime is 83976757. The next prime is 83976793. The reversal of 83976769 is 96767938.

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

It can be written as a sum of positive squares in 2 ways, for example, as 72335025 + 11641744 = 8505^2 + 3412^2 .

It is a cyclic number.

It is not a de Polignac number, because 83976769 - 2²¹ = 81879617 is a prime.

It is a super-2 number, since 2×83976769² = 14104195463358722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83976469) 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, 64864 + ... + 66145.

It is an arithmetic number, because the mean of its divisors is an integer number (21027105).

Almost surely, 2^83976769 is an apocalyptic number.

It is an amenable number.

83976769 is a deficient number, since it is larger than the sum of its proper divisors (131651).

83976769 is a wasteful number, since it uses less digits than its factorization.

83976769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131650.

The product of its digits is 3429216, while the sum is 55.

The square root of 83976769 is about 9163.8839473228. The cubic root of 83976769 is about 437.9115370088.

The spelling of 83976769 in words is "eighty-three million, nine hundred seventy-six thousand, seven hundred sixty-nine".