83977966 has 8 divisors (see below), whose sum is σ = 126305784. Its totient is φ = 41876040.

The previous prime is 83977937. The next prime is 83977973. The reversal of 83977966 is 66977938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55540 + ... + 57031.

It is an arithmetic number, because the mean of its divisors is an integer number (15788223).

Almost surely, 2^83977966 is an apocalyptic number.

83977966 is a deficient number, since it is larger than the sum of its proper divisors (42327818).

83977966 is a wasteful number, since it uses less digits than its factorization.

83977966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112946.

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

The square root of 83977966 is about 9163.9492578255. The cubic root of 83977966 is about 437.9136176541.

The spelling of 83977966 in words is "eighty-three million, nine hundred seventy-seven thousand, nine hundred sixty-six".