78982933 has 4 divisors (see below), whose sum is σ = 80909388. Its totient is φ = 77056480.

The previous prime is 78982931. The next prime is 78982957. The reversal of 78982933 is 33928987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33928987 = 2297 ⋅14771.

It can be written as a sum of positive squares in 2 ways, for example, as 33258289 + 45724644 = 5767^2 + 6762^2 .

It is a cyclic number.

It is not a de Polignac number, because 78982933 - 2¹ = 78982931 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78982931) 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, 963166 + ... + 963247.

It is an arithmetic number, because the mean of its divisors is an integer number (20227347).

Almost surely, 2^78982933 is an apocalyptic number.

It is an amenable number.

78982933 is a deficient number, since it is larger than the sum of its proper divisors (1926455).

78982933 is a wasteful number, since it uses less digits than its factorization.

78982933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926454.

The product of its digits is 653184, while the sum is 49.

The square root of 78982933 is about 8887.2342716956. The cubic root of 78982933 is about 429.0531409947.

The spelling of 78982933 in words is "seventy-eight million, nine hundred eighty-two thousand, nine hundred thirty-three".