105219399 has 8 divisors (see below), whose sum is σ = 140495472. Its totient is φ = 70044800.

The previous prime is 105219391. The next prime is 105219403. The reversal of 105219399 is 993912501.

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 105219399 - 2³ = 105219391 is a prime.

It is a super-2 number, since 2×105219399² = 22142243851842402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105219391) 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, 22914 + ... + 27119.

It is an arithmetic number, because the mean of its divisors is an integer number (17561934).

Almost surely, 2^105219399 is an apocalyptic number.

105219399 is a deficient number, since it is larger than the sum of its proper divisors (35276073).

105219399 is an equidigital number, since it uses as much as digits as its factorization.

105219399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50737.

The product of its (nonzero) digits is 21870, while the sum is 39.

The square root of 105219399 is about 10257.6507544369. The cubic root of 105219399 is about 472.0977590650.

The spelling of 105219399 in words is "one hundred five million, two hundred nineteen thousand, three hundred ninety-nine".