99428339 has 8 divisors (see below), whose sum is σ = 100737648. Its totient is φ = 98125600.

The previous prime is 99428299. The next prime is 99428363. The reversal of 99428339 is 93382499.

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 99428339 - 2²⁴ = 82651123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99428293 and 99428302.

It is not an unprimeable number, because it can be changed into a prime (99428639) 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, 33629 + ... + 36465.

It is an arithmetic number, because the mean of its divisors is an integer number (12592206).

Almost surely, 2^99428339 is an apocalyptic number.

99428339 is a deficient number, since it is larger than the sum of its proper divisors (1309309).

99428339 is a wasteful number, since it uses less digits than its factorization.

99428339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285.

The product of its digits is 419904, while the sum is 47.

The square root of 99428339 is about 9971.3759832834. The cubic root of 99428339 is about 463.2727208234.

It can be divided in two parts, 9942 and 8339, that added together give a palindrome (18281).

The spelling of 99428339 in words is "ninety-nine million, four hundred twenty-eight thousand, three hundred thirty-nine".