9961013 has 4 divisors (see below), whose sum is σ = 10282368. Its totient is φ = 9639660.

The previous prime is 9961009. The next prime is 9961033. The reversal of 9961013 is 3101699.

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.

It is a cyclic number.

It is not a de Polignac number, because 9961013 - 2² = 9961009 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 (9961033) 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, 160631 + ... + 160692.

It is an arithmetic number, because the mean of its divisors is an integer number (2570592).

Almost surely, 2^9961013 is an apocalyptic number.

It is an amenable number.

9961013 is a deficient number, since it is larger than the sum of its proper divisors (321355).

9961013 is a wasteful number, since it uses less digits than its factorization.

9961013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321354.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 9961013 is about 3156.1072541978. The cubic root of 9961013 is about 215.1631212054.

The spelling of 9961013 in words is "nine million, nine hundred sixty-one thousand, thirteen".