99945616 has 10 divisors (see below), whose sum is σ = 193644662. Its totient is φ = 49972800.

The previous prime is 99945611. The next prime is 99945617. The reversal of 99945616 is 61654999.

It can be written as a sum of positive squares in only one way, i.e., 99920016 + 25600 = 9996^2 + 160^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 99945616.

It is not an unprimeable number, because it can be changed into a prime (99945611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3123285 + ... + 3123316.

Almost surely, 2^99945616 is an apocalyptic number.

It is an amenable number.

99945616 is a deficient number, since it is larger than the sum of its proper divisors (93699046).

99945616 is a wasteful number, since it uses less digits than its factorization.

99945616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6246609 (or 6246603 counting only the distinct ones).

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

The square root of 99945616 is about 9997.2804301970. The cubic root of 99945616 is about 464.0747253809.

The spelling of 99945616 in words is "ninety-nine million, nine hundred forty-five thousand, six hundred sixteen".