9897109254 has 40 divisors (see below), whose sum is σ = 23141075760. Its totient is φ = 3155598864.

The previous prime is 9897109237. The next prime is 9897109279. The reversal of 9897109254 is 4529017989.

It is a super-2 number, since 2×9897109254² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 9897109254.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1324389 + ... + 1331840.

It is an arithmetic number, because the mean of its divisors is an integer number (578526894).

Almost surely, 2^9897109254 is an apocalyptic number.

9897109254 is an abundant number, since it is smaller than the sum of its proper divisors (13243966506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9897109254 is a wasteful number, since it uses less digits than its factorization.

9897109254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656266 (or 2656257 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The square root of 9897109254 is about 99484.2161048676. The cubic root of 9897109254 is about 2147.0201556056.

The spelling of 9897109254 in words is "nine billion, eight hundred ninety-seven million, one hundred nine thousand, two hundred fifty-four".