9979937 has 4 divisors (see below), whose sum is σ = 10887216. Its totient is φ = 9072660.

The previous prime is 9979927. The next prime is 9979943. The reversal of 9979937 is 7399799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9979937 - 2⁸ = 9979681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9979927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 453623 + ... + 453644.

It is an arithmetic number, because the mean of its divisors is an integer number (2721804).

Almost surely, 2^9979937 is an apocalyptic number.

It is an amenable number.

9979937 is a deficient number, since it is larger than the sum of its proper divisors (907279).

9979937 is a wasteful number, since it uses less digits than its factorization.

9979937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907278.

The product of its digits is 964467, while the sum is 53.

The square root of 9979937 is about 3159.1038286198. The cubic root of 9979937 is about 215.2992911282.

The spelling of 9979937 in words is "nine million, nine hundred seventy-nine thousand, nine hundred thirty-seven".