4905405 has 24 divisors (see below), whose sum is σ = 8634912. Its totient is φ = 2575584.

The previous prime is 4905391. The next prime is 4905421. The reversal of 4905405 is 5045094.

It is not a de Polignac number, because 4905405 - 2⁴ = 4905389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2202 + ... + 3828.

It is an arithmetic number, because the mean of its divisors is an integer number (359788).

Almost surely, 2^4905405 is an apocalyptic number.

4905405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4905405 is a deficient number, since it is larger than the sum of its proper divisors (3729507).

4905405 is a wasteful number, since it uses less digits than its factorization.

4905405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1702 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 4905405 is about 2214.8148906850. The cubic root of 4905405 is about 169.9123538978.

It can be divided in two parts, 490540 and 5, that added together give a triangular number (490545 = T₉₉₀).

The spelling of 4905405 in words is "four million, nine hundred five thousand, four hundred five".