99621301 has 4 divisors (see below), whose sum is σ = 107284492. Its totient is φ = 91958112.

The previous prime is 99621289. The next prime is 99621311. The reversal of 99621301 is 10312699.

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 12180100 + 87441201 = 3490^2 + 9351^2 .

It is a cyclic number.

It is not a de Polignac number, because 99621301 - 2⁹ = 99620789 is a prime.

It is a super-2 number, since 2×99621301² = 19848807225865202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99621311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3831576 + ... + 3831601.

It is an arithmetic number, because the mean of its divisors is an integer number (26821123).

Almost surely, 2^99621301 is an apocalyptic number.

It is an amenable number.

99621301 is a deficient number, since it is larger than the sum of its proper divisors (7663191).

99621301 is a wasteful number, since it uses less digits than its factorization.

99621301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663190.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 99621301 is about 9981.0470893589. The cubic root of 99621301 is about 463.5722204915.

The spelling of 99621301 in words is "ninety-nine million, six hundred twenty-one thousand, three hundred one".