9008642 has 4 divisors (see below), whose sum is σ = 13512966. Its totient is φ = 4504320.

The previous prime is 9008639. The next prime is 9008687. The reversal of 9008642 is 2468009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2468009 = 17 ⋅145177.

It can be written as a sum of positive squares in only one way, i.e., 8994001 + 14641 = 2999^2 + 121^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2252159 + ... + 2252162.

Almost surely, 2^9008642 is an apocalyptic number.

9008642 is a deficient number, since it is larger than the sum of its proper divisors (4504324).

9008642 is a wasteful number, since it uses less digits than its factorization.

9008642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4504323.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 9008642 is about 3001.4399877392. The cubic root of 9008642 is about 208.0749390970.

The spelling of 9008642 in words is "nine million, eight thousand, six hundred forty-two".