99919345 has 8 divisors (see below), whose sum is σ = 119992680. Its totient is φ = 79875840.

The previous prime is 99919343. The next prime is 99919357. The reversal of 99919345 is 54391999.

It can be written as a sum of positive squares in 4 ways, for example, as 18215824 + 81703521 = 4268^2 + 9039^2 .

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

It is not a de Polignac number, because 99919345 - 2¹ = 99919343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99919343) 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, 735 + ... + 14155.

It is an arithmetic number, because the mean of its divisors is an integer number (14999085).

Almost surely, 2^99919345 is an apocalyptic number.

It is an amenable number.

99919345 is a deficient number, since it is larger than the sum of its proper divisors (20073335).

99919345 is a wasteful number, since it uses less digits than its factorization.

99919345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14915.

The product of its digits is 393660, while the sum is 49.

The square root of 99919345 is about 9995.9664365183. The cubic root of 99919345 is about 464.0340606809.

The spelling of 99919345 in words is "ninety-nine million, nine hundred nineteen thousand, three hundred forty-five".