3427909 has 4 divisors (see below), whose sum is σ = 3431680. Its totient is φ = 3424140.

The previous prime is 3427903. The next prime is 3427913. The reversal of 3427909 is 9097243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9097243 = 1181 ⋅7703.

It is a cyclic number.

It is not a de Polignac number, because 3427909 - 2⁹ = 3427397 is a prime.

It is a super-2 number, since 2×3427909² = 23501120224562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3427903) 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, 412 + ... + 2650.

It is an arithmetic number, because the mean of its divisors is an integer number (857920).

Almost surely, 2^3427909 is an apocalyptic number.

It is an amenable number.

3427909 is a deficient number, since it is larger than the sum of its proper divisors (3771).

3427909 is a wasteful number, since it uses less digits than its factorization.

3427909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3770.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 3427909 is about 1851.4613147457. The cubic root of 3427909 is about 150.7797763384.

The spelling of 3427909 in words is "three million, four hundred twenty-seven thousand, nine hundred nine".