4900905 has 20 divisors (see below), whose sum is σ = 8786052. Its totient is φ = 2613600.

The previous prime is 4900877. The next prime is 4900927. The reversal of 4900905 is 5090094.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3884841 + 1016064 = 1971^2 + 1008^2 .

It is not a de Polignac number, because 4900905 - 2⁹ = 4900393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5646 + ... + 6455.

Almost surely, 2^4900905 is an apocalyptic number.

4900905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4900905 is a deficient number, since it is larger than the sum of its proper divisors (3885147).

4900905 is a wasteful number, since it uses less digits than its factorization.

4900905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12118 (or 12109 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 4900905 is about 2213.7987713431. The cubic root of 4900905 is about 169.8603813276.

Adding to 4900905 its reverse (5090094), we get a palindrome (9990999).

The spelling of 4900905 in words is "four million, nine hundred thousand, nine hundred five".