4989405 has 16 divisors (see below), whose sum is σ = 8043840. Its totient is φ = 2640768.

The previous prime is 4989377. The next prime is 4989409. The reversal of 4989405 is 5049894.

It is not a de Polignac number, because 4989405 - 2⁷ = 4989277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989409) 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 15 ways as a sum of consecutive naturals, for example, 889 + ... + 3281.

It is an arithmetic number, because the mean of its divisors is an integer number (502740).

Almost surely, 2^4989405 is an apocalyptic number.

It is an amenable number.

4989405 is a deficient number, since it is larger than the sum of its proper divisors (3054435).

4989405 is a wasteful number, since it uses less digits than its factorization.

4989405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2540.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 4989405 is about 2233.6976071080. The cubic root of 4989405 is about 170.8767279542.

The spelling of 4989405 in words is "four million, nine hundred eighty-nine thousand, four hundred five".