3442905 has 20 divisors (see below), whose sum is σ = 6172452. Its totient is φ = 1836000.

The previous prime is 3442903. The next prime is 3442913. The reversal of 3442905 is 5092443.

It can be written as a sum of positive squares in 2 ways, for example, as 700569 + 2742336 = 837^2 + 1656^2 .

It is not a de Polignac number, because 3442905 - 2¹ = 3442903 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (3442903) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3846 + ... + 4655.

Almost surely, 2^3442905 is an apocalyptic number.

It is an amenable number.

3442905 is a deficient number, since it is larger than the sum of its proper divisors (2729547).

3442905 is an equidigital number, since it uses as much as digits as its factorization.

3442905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8518 (or 8509 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 3442905 is about 1855.5066693494. The cubic root of 3442905 is about 150.9993275119. Note that the first 3 decimals are identical.

It can be divided in two parts, 344 and 2905, that added together give a square (3249 = 57²).

The spelling of 3442905 in words is "three million, four hundred forty-two thousand, nine hundred five".