7879090 has 16 divisors (see below), whose sum is σ = 14216472. Its totient is φ = 3144064.

The previous prime is 7879073. The next prime is 7879099. The reversal of 7879090 is 909787.

It can be written as a sum of positive squares in 4 ways, for example, as 4678569 + 3200521 = 2163^2 + 1789^2 .

It is not an unprimeable number, because it can be changed into a prime (7879099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5532 + ... + 6808.

Almost surely, 2^7879090 is an apocalyptic number.

7879090 is a deficient number, since it is larger than the sum of its proper divisors (6337382).

7879090 is a wasteful number, since it uses less digits than its factorization.

7879090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901.

The product of its (nonzero) digits is 31752, while the sum is 40.

The square root of 7879090 is about 2806.9716778051. The cubic root of 7879090 is about 198.9872974897.

The spelling of 7879090 in words is "seven million, eight hundred seventy-nine thousand, ninety".