99945473 has 8 divisors (see below), whose sum is σ = 103401192. Its totient is φ = 96529536.

The previous prime is 99945463. The next prime is 99945481. The reversal of 99945473 is 37454999.

It can be written as a sum of positive squares in 4 ways, for example, as 14992384 + 84953089 = 3872^2 + 9217^2 .

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 99945473 - 2⁸ = 99945217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99945463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4790 + ... + 14927.

It is an arithmetic number, because the mean of its divisors is an integer number (12925149).

Almost surely, 2^99945473 is an apocalyptic number.

It is an amenable number.

99945473 is a deficient number, since it is larger than the sum of its proper divisors (3455719).

99945473 is a wasteful number, since it uses less digits than its factorization.

99945473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19891.

The product of its digits is 1224720, while the sum is 50.

The square root of 99945473 is about 9997.2732782494. The cubic root of 99945473 is about 464.0745040515.

The spelling of 99945473 in words is "ninety-nine million, nine hundred forty-five thousand, four hundred seventy-three".