3504385 has 4 divisors (see below), whose sum is σ = 4205268. Its totient is φ = 2803504.

The previous prime is 3504377. The next prime is 3504407. The reversal of 3504385 is 5834053.

It is a Cunningham number, because it is equal to 1872²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1263376 + 2241009 = 1124^2 + 1497^2 .

It is a cyclic number.

It is not a de Polignac number, because 3504385 - 2³ = 3504377 is a prime.

It is a Duffinian number.

3504385 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350434 + ... + 350443.

It is an arithmetic number, because the mean of its divisors is an integer number (1051317).

Almost surely, 2^3504385 is an apocalyptic number.

It is an amenable number.

3504385 is a deficient number, since it is larger than the sum of its proper divisors (700883).

3504385 is an equidigital number, since it uses as much as digits as its factorization.

3504385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700882.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 3504385 is about 1872.0002670940. Note that the first 3 decimals coincide. The cubic root of 3504385 is about 151.8928290020.

The spelling of 3504385 in words is "three million, five hundred four thousand, three hundred eighty-five".