969636121 has 4 divisors (see below), whose sum is σ = 972168192. Its totient is φ = 967104052.

The previous prime is 969636119. The next prime is 969636133. The reversal of 969636121 is 121636969.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121636969 = 503 ⋅241823.

It is a cyclic number.

It is not a de Polignac number, because 969636121 - 2¹ = 969636119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (969636181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265461 + ... + 1266226.

It is an arithmetic number, because the mean of its divisors is an integer number (243042048).

Almost surely, 2^969636121 is an apocalyptic number.

It is an amenable number.

969636121 is a deficient number, since it is larger than the sum of its proper divisors (2532071).

969636121 is a wasteful number, since it uses less digits than its factorization.

969636121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2532070.

The product of its digits is 104976, while the sum is 43.

The square root of 969636121 is about 31138.9807315525. The cubic root of 969636121 is about 989.7745025983.

The spelling of 969636121 in words is "nine hundred sixty-nine million, six hundred thirty-six thousand, one hundred twenty-one".