9709642 has 4 divisors (see below), whose sum is σ = 14564466. Its totient is φ = 4854820.

The previous prime is 9709639. The next prime is 9709663. The reversal of 9709642 is 2469079.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6713281 + 2996361 = 2591^2 + 1731^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2427409 + ... + 2427412.

Almost surely, 2^9709642 is an apocalyptic number.

9709642 is a deficient number, since it is larger than the sum of its proper divisors (4854824).

9709642 is a wasteful number, since it uses less digits than its factorization.

9709642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4854823.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 9709642 is about 3116.0298458134. The cubic root of 9709642 is about 213.3377641224.

The spelling of 9709642 in words is "nine million, seven hundred nine thousand, six hundred forty-two".