9649905 has 16 divisors (see below), whose sum is σ = 15483264. Its totient is φ = 5132160.

The previous prime is 9649901. The next prime is 9649909. The reversal of 9649905 is 5099469.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9649901) and next prime (9649909).

It is not a de Polignac number, because 9649905 - 2² = 9649901 is a prime.

9649905 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9649901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6645 + ... + 7965.

It is an arithmetic number, because the mean of its divisors is an integer number (967704).

Almost surely, 2^9649905 is an apocalyptic number.

It is an amenable number.

9649905 is a deficient number, since it is larger than the sum of its proper divisors (5833359).

9649905 is a wasteful number, since it uses less digits than its factorization.

9649905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 9649905 is about 3106.4296225732. The cubic root of 9649905 is about 212.8993551275.

The spelling of 9649905 in words is "nine million, six hundred forty-nine thousand, nine hundred five".