9955691 has 4 divisors (see below), whose sum is σ = 10095984. Its totient is φ = 9815400.

The previous prime is 9955651. The next prime is 9955697. The reversal of 9955691 is 1965599.

9955691 = T₁₉₃ + T₁₉₄ + ... + T₄₀₅.

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

It is a cyclic number.

It is not a de Polignac number, because 9955691 - 2¹⁰ = 9954667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9955697) 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, 70040 + ... + 70181.

It is an arithmetic number, because the mean of its divisors is an integer number (2523996).

Almost surely, 2^9955691 is an apocalyptic number.

9955691 is a deficient number, since it is larger than the sum of its proper divisors (140293).

9955691 is a wasteful number, since it uses less digits than its factorization.

9955691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140292.

The product of its digits is 109350, while the sum is 44.

The square root of 9955691 is about 3155.2640143101. The cubic root of 9955691 is about 215.1247950456.

The spelling of 9955691 in words is "nine million, nine hundred fifty-five thousand, six hundred ninety-one".