9940679 has 12 divisors (see below), whose sum is σ = 11878344. Its totient is φ = 8288784.

The previous prime is 9940643. The next prime is 9940681. The reversal of 9940679 is 9760499.

It is a de Polignac number, because none of the positive numbers 2^k-9940679 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 929 + ... + 4554.

It is an arithmetic number, because the mean of its divisors is an integer number (989862).

Almost surely, 2^9940679 is an apocalyptic number.

9940679 is a deficient number, since it is larger than the sum of its proper divisors (1937665).

9940679 is a wasteful number, since it uses less digits than its factorization.

9940679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5534 (or 5527 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 9940679 is about 3152.8842351092. The cubic root of 9940679 is about 215.0166131024.

The spelling of 9940679 in words is "nine million, nine hundred forty thousand, six hundred seventy-nine".