4780405 has 16 divisors (see below), whose sum is σ = 6649344. Its totient is φ = 3231360.

The previous prime is 4780403. The next prime is 4780409. The reversal of 4780405 is 5040874.

It is not a de Polignac number, because 4780405 - 2¹ = 4780403 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4780403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1620 + ... + 3490.

It is an arithmetic number, because the mean of its divisors is an integer number (415584).

Almost surely, 2^4780405 is an apocalyptic number.

It is an amenable number.

4780405 is a deficient number, since it is larger than the sum of its proper divisors (1868939).

4780405 is a wasteful number, since it uses less digits than its factorization.

4780405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 4780405 is about 2186.4137302899. The cubic root of 4780405 is about 168.4566774541.

The spelling of 4780405 in words is "four million, seven hundred eighty thousand, four hundred five".