9813969 has 12 divisors (see below), whose sum is σ = 15464592. Its totient is φ = 5947800.

The previous prime is 9813967. The next prime is 9813971. The reversal of 9813969 is 9693189.

It is an interprime number because it is at equal distance from previous prime (9813967) and next prime (9813971).

It is not a de Polignac number, because 9813969 - 2¹ = 9813967 is a prime.

It is a super-2 number, since 2×9813969² = 192627975065922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9813961) 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, 49467 + ... + 49664.

It is an arithmetic number, because the mean of its divisors is an integer number (1288716).

Almost surely, 2^9813969 is an apocalyptic number.

9813969 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

9813969 is a deficient number, since it is larger than the sum of its proper divisors (5650623).

9813969 is a wasteful number, since it uses less digits than its factorization.

9813969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99148 (or 99145 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 9813969 is about 3132.7254906870. The cubic root of 9813969 is about 214.0991257663.

It can be divided in two parts, 981 and 3969, that added together give a triangular number (4950 = T₉₉).

The spelling of 9813969 in words is "nine million, eight hundred thirteen thousand, nine hundred sixty-nine".