4909905 has 96 divisors (see below), whose sum is σ = 11531520. Its totient is φ = 1866240.

The previous prime is 4909871. The next prime is 4909939. The reversal of 4909905 is 5099094.

It is an interprime number because it is at equal distance from previous prime (4909871) and next prime (4909939).

It is not a de Polignac number, because 4909905 - 2⁶ = 4909841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4909905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 44991 + ... + 45099.

It is an arithmetic number, because the mean of its divisors is an integer number (120120).

Almost surely, 2^4909905 is an apocalyptic number.

4909905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4909905 is an abundant number, since it is smaller than the sum of its proper divisors (6621615).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4909905 is a wasteful number, since it uses less digits than its factorization.

4909905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 4909905 is about 2215.8305440624. The cubic root of 4909905 is about 169.9642946928.

It can be divided in two parts, 4 and 909905, that added together give a palindrome (909909).

The spelling of 4909905 in words is "four million, nine hundred nine thousand, nine hundred five".