9945400555 has 8 divisors (see below), whose sum is σ = 12212026992. Its totient is φ = 7771289568.

The previous prime is 9945400541. The next prime is 9945400573. The reversal of 9945400555 is 5550045499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9945400555 - 2⁷ = 9945400427 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23128624 + ... + 23129053.

It is an arithmetic number, because the mean of its divisors is an integer number (1526503374).

Almost surely, 2^9945400555 is an apocalyptic number.

9945400555 is a deficient number, since it is larger than the sum of its proper divisors (2266626437).

9945400555 is a wasteful number, since it uses less digits than its factorization.

9945400555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46257725.

The product of its (nonzero) digits is 810000, while the sum is 46.

The square root of 9945400555 is about 99726.6291168011. The cubic root of 9945400555 is about 2150.5065008233.

The spelling of 9945400555 in words is "nine billion, nine hundred forty-five million, four hundred thousand, five hundred fifty-five".