105404399 has 8 divisors (see below), whose sum is σ = 109499040. Its totient is φ = 101382400.

The previous prime is 105404393. The next prime is 105404447. The reversal of 105404399 is 993404501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105404399 is a prime.

It is a super-2 number, since 2×105404399² = 22220174657102402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105404393) 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, 15194 + ... + 21015.

It is an arithmetic number, because the mean of its divisors is an integer number (13687380).

Almost surely, 2^105404399 is an apocalyptic number.

105404399 is a deficient number, since it is larger than the sum of its proper divisors (4094641).

105404399 is an equidigital number, since it uses as much as digits as its factorization.

105404399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36321.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 105404399 is about 10266.6644534630. The cubic root of 105404399 is about 472.3742826888.

The spelling of 105404399 in words is "one hundred five million, four hundred four thousand, three hundred ninety-nine".