83936978 has 8 divisors (see below), whose sum is σ = 126070668. Its totient is φ = 41913424.

The previous prime is 83936969. The next prime is 83937011. The reversal of 83936978 is 87963938.

It can be written as a sum of positive squares in 2 ways, for example, as 82755409 + 1181569 = 9097^2 + 1087^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25601 + ... + 28692.

Almost surely, 2^83936978 is an apocalyptic number.

83936978 is a deficient number, since it is larger than the sum of its proper divisors (42133690).

83936978 is a wasteful number, since it uses less digits than its factorization.

83936978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55068.

The product of its digits is 1959552, while the sum is 53.

The square root of 83936978 is about 9161.7126128252. The cubic root of 83936978 is about 437.8423603739.

The spelling of 83936978 in words is "eighty-three million, nine hundred thirty-six thousand, nine hundred seventy-eight".