105404487 has 8 divisors (see below), whose sum is σ = 140629104. Its totient is φ = 70224768.

The previous prime is 105404477. The next prime is 105404491. The reversal of 105404487 is 784404501.

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

It is not a de Polignac number, because 105404487 - 2¹⁸ = 105142343 is a prime.

It is a super-2 number, since 2×105404487² = 22220211759466338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105404447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5298 + ... + 15455.

It is an arithmetic number, because the mean of its divisors is an integer number (17578638).

Almost surely, 2^105404487 is an apocalyptic number.

105404487 is a deficient number, since it is larger than the sum of its proper divisors (35224617).

105404487 is a wasteful number, since it uses less digits than its factorization.

105404487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22449.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 105404487 is about 10266.6687391773. The cubic root of 105404487 is about 472.3744141473.

Adding to 105404487 its reverse (784404501), we get a palindrome (889808988).

The spelling of 105404487 in words is "one hundred five million, four hundred four thousand, four hundred eighty-seven".