9878497 has 4 divisors (see below), whose sum is σ = 9893140. Its totient is φ = 9863856.

The previous prime is 9878489. The next prime is 9878503. The reversal of 9878497 is 7948789.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7948789 = 1213 ⋅6553.

It can be written as a sum of positive squares in 2 ways, for example, as 6507601 + 3370896 = 2551^2 + 1836^2 .

It is a cyclic number.

It is not a de Polignac number, because 9878497 - 2³ = 9878489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9878467) 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, 6258 + ... + 7675.

It is an arithmetic number, because the mean of its divisors is an integer number (2473285).

Almost surely, 2^9878497 is an apocalyptic number.

It is an amenable number.

9878497 is a deficient number, since it is larger than the sum of its proper divisors (14643).

9878497 is a wasteful number, since it uses less digits than its factorization.

9878497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14642.

The product of its digits is 1016064, while the sum is 52.

The square root of 9878497 is about 3143.0076360073. The cubic root of 9878497 is about 214.5673433734.

The spelling of 9878497 in words is "nine million, eight hundred seventy-eight thousand, four hundred ninety-seven".