9963155 has 4 divisors (see below), whose sum is σ = 11955792. Its totient is φ = 7970520.

The previous prime is 9963137. The next prime is 9963169. The reversal of 9963155 is 5513699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5513699 = 877 ⋅6287.

It is not a de Polignac number, because 9963155 - 2¹⁴ = 9946771 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 996311 + ... + 996320.

It is an arithmetic number, because the mean of its divisors is an integer number (2988948).

Almost surely, 2^9963155 is an apocalyptic number.

9963155 is a deficient number, since it is larger than the sum of its proper divisors (1992637).

9963155 is a wasteful number, since it uses less digits than its factorization.

9963155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992636.

The product of its digits is 36450, while the sum is 38.

The square root of 9963155 is about 3156.4465780368. The cubic root of 9963155 is about 215.1785428757.

It can be divided in two parts, 99631 and 55, that multiplied together give a triangular number (5479705 = T₃₃₁₀).

The spelling of 9963155 in words is "nine million, nine hundred sixty-three thousand, one hundred fifty-five".