9945499 has 4 divisors (see below), whose sum is σ = 10377936. Its totient is φ = 9513064.

The previous prime is 9945461. The next prime is 9945511.

9945499 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9945499 is a prime.

It is a Duffinian number.

9945499 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9945409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216184 + ... + 216229.

It is an arithmetic number, because the mean of its divisors is an integer number (2594484).

Almost surely, 2^9945499 is an apocalyptic number.

9945499 is a deficient number, since it is larger than the sum of its proper divisors (432437).

9945499 is a wasteful number, since it uses less digits than its factorization.

9945499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432436.

The product of its digits is 524880, while the sum is 49.

The square root of 9945499 is about 3153.6485219504. The cubic root of 9945499 is about 215.0513596429.

The spelling of 9945499 in words is "nine million, nine hundred forty-five thousand, four hundred ninety-nine".