8779642 has 4 divisors (see below), whose sum is σ = 13169466. Its totient is φ = 4389820.

The previous prime is 8779621. The next prime is 8779703. The reversal of 8779642 is 2469778.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2469778 = 2 ⋅1234889.

It can be written as a sum of positive squares in only one way, i.e., 8520561 + 259081 = 2919^2 + 509^2 .

It is a super-2 number, since 2×8779642² = 154164227296328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2194909 + ... + 2194912.

Almost surely, 2^8779642 is an apocalyptic number.

8779642 is a deficient number, since it is larger than the sum of its proper divisors (4389824).

8779642 is a wasteful number, since it uses less digits than its factorization.

8779642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389823.

The product of its digits is 169344, while the sum is 43.

The square root of 8779642 is about 2963.0460678160. The cubic root of 8779642 is about 206.2966944170.

The spelling of 8779642 in words is "eight million, seven hundred seventy-nine thousand, six hundred forty-two".