9540897399 has 48 divisors (see below), whose sum is σ = 15513039360. Its totient is φ = 5600724480.

The previous prime is 9540897391. The next prime is 9540897407. The reversal of 9540897399 is 9937980459.

It is a happy number.

9540897399 is a `hidden beast` number, since 9 + 540 + 89 + 7 + 3 + 9 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (9540897391) and next prime (9540897407).

It is not a de Polignac number, because 9540897399 - 2³ = 9540897391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9540897391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 440772 + ... + 461910.

It is an arithmetic number, because the mean of its divisors is an integer number (323188320).

Almost surely, 2^9540897399 is an apocalyptic number.

9540897399 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9540897399 is a deficient number, since it is larger than the sum of its proper divisors (5972141961).

9540897399 is a wasteful number, since it uses less digits than its factorization.

9540897399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21300 (or 21297 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 63.

The square root of 9540897399 is about 97677.5173670994. The cubic root of 9540897399 is about 2120.9466372090.

The spelling of 9540897399 in words is "nine billion, five hundred forty million, eight hundred ninety-seven thousand, three hundred ninety-nine".