9969149 has 4 divisors (see below), whose sum is σ = 9984636. Its totient is φ = 9953664.

The previous prime is 9969137. The next prime is 9969151. The reversal of 9969149 is 9419699.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3115225 + 6853924 = 1765^2 + 2618^2 .

It is a cyclic number.

It is not a de Polignac number, because 9969149 - 2⁴ = 9969133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9962149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6734 + ... + 8079.

It is an arithmetic number, because the mean of its divisors is an integer number (2496159).

Almost surely, 2^9969149 is an apocalyptic number.

It is an amenable number.

9969149 is a deficient number, since it is larger than the sum of its proper divisors (15487).

9969149 is a wasteful number, since it uses less digits than its factorization.

9969149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15486.

The product of its digits is 157464, while the sum is 47.

The square root of 9969149 is about 3157.3959206916. The cubic root of 9969149 is about 215.2216858901.

The spelling of 9969149 in words is "nine million, nine hundred sixty-nine thousand, one hundred forty-nine".