9959405 has 4 divisors (see below), whose sum is σ = 11951292. Its totient is φ = 7967520.

The previous prime is 9959393. The next prime is 9959407. The reversal of 9959405 is 5049599.

9959405 is nontrivially palindromic in base 14.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5049599 = 1459 ⋅3461.

It can be written as a sum of positive squares in 2 ways, for example, as 5026564 + 4932841 = 2242^2 + 2221^2 .

It is not a de Polignac number, because 9959405 - 2¹⁶ = 9893869 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 (9959407) 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, 995936 + ... + 995945.

It is an arithmetic number, because the mean of its divisors is an integer number (2987823).

Almost surely, 2^9959405 is an apocalyptic number.

It is an amenable number.

9959405 is a deficient number, since it is larger than the sum of its proper divisors (1991887).

9959405 is a wasteful number, since it uses less digits than its factorization.

9959405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991886.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 9959405 is about 3155.8524997217. The cubic root of 9959405 is about 215.1515427004.

The spelling of 9959405 in words is "nine million, nine hundred fifty-nine thousand, four hundred five".