99439238 has 8 divisors (see below), whose sum is σ = 150147120. Its totient is φ = 49390200.

The previous prime is 99439237. The next prime is 99439243. The reversal of 99439238 is 83293499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 99439192 and 99439201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99439237) 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, 164333 + ... + 164936.

It is an arithmetic number, because the mean of its divisors is an integer number (18768390).

Almost surely, 2^99439238 is an apocalyptic number.

99439238 is a deficient number, since it is larger than the sum of its proper divisors (50707882).

99439238 is a wasteful number, since it uses less digits than its factorization.

99439238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329422.

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

The square root of 99439238 is about 9971.9224826510. The cubic root of 99439238 is about 463.2896476706.

The spelling of 99439238 in words is "ninety-nine million, four hundred thirty-nine thousand, two hundred thirty-eight".