9979291 has 6 divisors (see below), whose sum is σ = 11608620. Its totient is φ = 8553636.

The previous prime is 9979283. The next prime is 9979297. The reversal of 9979291 is 1929799.

It is not a de Polignac number, because 9979291 - 2³ = 9979283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9979297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101781 + ... + 101878.

It is an arithmetic number, because the mean of its divisors is an integer number (1934770).

Almost surely, 2^9979291 is an apocalyptic number.

9979291 is a deficient number, since it is larger than the sum of its proper divisors (1629329).

9979291 is a wasteful number, since it uses less digits than its factorization.

9979291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203673 (or 203666 counting only the distinct ones).

The product of its digits is 91854, while the sum is 46.

The square root of 9979291 is about 3159.0015827790. The cubic root of 9979291 is about 215.2946455964.

It can be divided in two parts, 9 and 979291, that added together give a triangular number (979300 = T₁₃₉₉).

The spelling of 9979291 in words is "nine million, nine hundred seventy-nine thousand, two hundred ninety-one".