104905405 has 8 divisors (see below), whose sum is σ = 137330784. Its totient is φ = 76294800.

The previous prime is 104905399. The next prime is 104905433. The reversal of 104905405 is 504509401.

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

It is not a de Polignac number, because 104905405 - 2¹³ = 104897213 is a prime.

It is a super-2 number, since 2×104905405² = 22010287996428050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 953631 + ... + 953740.

It is an arithmetic number, because the mean of its divisors is an integer number (17166348).

Almost surely, 2^104905405 is an apocalyptic number.

It is an amenable number.

104905405 is a deficient number, since it is larger than the sum of its proper divisors (32425379).

104905405 is a wasteful number, since it uses less digits than its factorization.

104905405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907387.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 104905405 is about 10242.3339625302. Note that the first 3 decimals coincide. The cubic root of 104905405 is about 471.6276823666.

It can be divided in two parts, 104 and 905405, that added together give a palindrome (905509).

The spelling of 104905405 in words is "one hundred four million, nine hundred five thousand, four hundred five".