9968405 has 4 divisors (see below), whose sum is σ = 11962092. Its totient is φ = 7974720.

The previous prime is 9968381. The next prime is 9968411. The reversal of 9968405 is 5048699.

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 1868689 + 8099716 = 1367^2 + 2846^2 .

It is not a de Polignac number, because 9968405 - 2⁸ = 9968149 is a prime.

It is a Duffinian number.

It is a congruent 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, 996836 + ... + 996845.

It is an arithmetic number, because the mean of its divisors is an integer number (2990523).

Almost surely, 2^9968405 is an apocalyptic number.

It is an amenable number.

9968405 is a deficient number, since it is larger than the sum of its proper divisors (1993687).

9968405 is a wasteful number, since it uses less digits than its factorization.

9968405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993686.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 9968405 is about 3157.2780998829. The cubic root of 9968405 is about 215.2163317415.

The spelling of 9968405 in words is "nine million, nine hundred sixty-eight thousand, four hundred five".