9897405 has 16 divisors (see below), whose sum is σ = 18098304. Its totient is φ = 4524480.

The previous prime is 9897397. The next prime is 9897457. The reversal of 9897405 is 5047989.

9897405 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9897405 - 2³ = 9897397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47026 + ... + 47235.

It is an arithmetic number, because the mean of its divisors is an integer number (1131144).

Almost surely, 2^9897405 is an apocalyptic number.

It is an amenable number.

9897405 is a deficient number, since it is larger than the sum of its proper divisors (8200899).

9897405 is a wasteful number, since it uses less digits than its factorization.

9897405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94276.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 9897405 is about 3146.0141449142. The cubic root of 9897405 is about 214.7041541187.

The spelling of 9897405 in words is "nine million, eight hundred ninety-seven thousand, four hundred five".