7978084 has 6 divisors (see below), whose sum is σ = 13961654. Its totient is φ = 3989040.

The previous prime is 7978063. The next prime is 7978099. The reversal of 7978084 is 4808797.

It can be written as a sum of positive squares in only one way, i.e., 7963684 + 14400 = 2822^2 + 120^2 .

It is a super-2 number, since 2×7978084² = 127299648622112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7978084.

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 as a sum of consecutive naturals, namely, 997257 + ... + 997264.

Almost surely, 2^7978084 is an apocalyptic number.

It is an amenable number.

7978084 is a deficient number, since it is larger than the sum of its proper divisors (5983570).

7978084 is a wasteful number, since it uses less digits than its factorization.

7978084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994525 (or 1994523 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 7978084 is about 2824.5502296826. The cubic root of 7978084 is about 199.8171996377.

The spelling of 7978084 in words is "seven million, nine hundred seventy-eight thousand, eighty-four".