99939229 has 8 divisors (see below), whose sum is σ = 107811032. Its totient is φ = 92093760.

The previous prime is 99939227. The next prime is 99939233. The reversal of 99939229 is 92293999.

It can be written as a sum of positive squares in 4 ways, for example, as 139129 + 99800100 = 373^2 + 9990^2 .

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 99939229 - 2¹ = 99939227 is a prime.

It is a super-2 number, since 2×99939229² = 19975698986228882, 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 (99939227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1699 + ... + 14239.

It is an arithmetic number, because the mean of its divisors is an integer number (13476379).

Almost surely, 2^99939229 is an apocalyptic number.

It is an amenable number.

99939229 is a deficient number, since it is larger than the sum of its proper divisors (7871803).

99939229 is a wasteful number, since it uses less digits than its factorization.

99939229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13167.

The product of its digits is 708588, while the sum is 52.

The square root of 99939229 is about 9996.9609882204. The cubic root of 99939229 is about 464.0648396433.

The spelling of 99939229 in words is "ninety-nine million, nine hundred thirty-nine thousand, two hundred twenty-nine".