99620369 has 4 divisors (see below), whose sum is σ = 99652644. Its totient is φ = 99588096.

The previous prime is 99620351. The next prime is 99620407. The reversal of 99620369 is 96302699.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46403344 + 53217025 = 6812^2 + 7295^2 .

It is a cyclic number.

It is not a de Polignac number, because 99620369 - 2¹² = 99616273 is a prime.

It is a super-2 number, since 2×99620369² = 19848435839392322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99620309) 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 3 ways as a sum of consecutive naturals, for example, 10952 + ... + 17865.

It is an arithmetic number, because the mean of its divisors is an integer number (24913161).

Almost surely, 2^99620369 is an apocalyptic number.

It is an amenable number.

99620369 is a deficient number, since it is larger than the sum of its proper divisors (32275).

99620369 is a wasteful number, since it uses less digits than its factorization.

99620369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32274.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 99620369 is about 9981.0004007614. Note that the first 3 decimals coincide. The cubic root of 99620369 is about 463.5707748480.

The spelling of 99620369 in words is "ninety-nine million, six hundred twenty thousand, three hundred sixty-nine".