9940636 has 6 divisors (see below), whose sum is σ = 17396120. Its totient is φ = 4970316.

The previous prime is 9940613. The next prime is 9940643. The reversal of 9940636 is 6360499.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9940595 and 9940604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1242576 + ... + 1242583.

Almost surely, 2^9940636 is an apocalyptic number.

It is an amenable number.

9940636 is a deficient number, since it is larger than the sum of its proper divisors (7455484).

9940636 is a wasteful number, since it uses less digits than its factorization.

9940636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485163 (or 2485161 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 9940636 is about 3152.8774159488. The cubic root of 9940636 is about 215.0163030724.

The spelling of 9940636 in words is "nine million, nine hundred forty thousand, six hundred thirty-six".