3501409 has 4 divisors (see below), whose sum is σ = 3537604. Its totient is φ = 3465216.

The previous prime is 3501391. The next prime is 3501413. The reversal of 3501409 is 9041053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9041053 = 7 ⋅1291579.

It can be written as a sum of positive squares in 2 ways, for example, as 1030225 + 2471184 = 1015^2 + 1572^2 .

It is a cyclic number.

It is not a de Polignac number, because 3501409 - 2⁹ = 3500897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3501409.

It is not an unprimeable number, because it can be changed into a prime (3501469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17952 + ... + 18145.

It is an arithmetic number, because the mean of its divisors is an integer number (884401).

Almost surely, 2^3501409 is an apocalyptic number.

It is an amenable number.

3501409 is a deficient number, since it is larger than the sum of its proper divisors (36195).

3501409 is an equidigital number, since it uses as much as digits as its factorization.

3501409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36194.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 3501409 is about 1871.2052265853. The cubic root of 3501409 is about 151.8498199264.

The spelling of 3501409 in words is "three million, five hundred one thousand, four hundred nine".