9961408 has 28 divisors (see below), whose sum is σ = 19869912. Its totient is φ = 4954880.

The previous prime is 9961397. The next prime is 9961421. The reversal of 9961408 is 8041699.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20043 + ... + 20533.

Almost surely, 2^9961408 is an apocalyptic number.

It is an amenable number.

9961408 is a deficient number, since it is larger than the sum of its proper divisors (9908504).

9961408 is a wasteful number, since it uses less digits than its factorization.

9961408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 9961408 is about 3156.1698306650. The cubic root of 9961408 is about 215.1659652371.

The spelling of 9961408 in words is "nine million, nine hundred sixty-one thousand, four hundred eight".