3428509409 has 4 divisors (see below), whose sum is σ = 3692240916. Its totient is φ = 3164777904.

The previous prime is 3428509363. The next prime is 3428509481. The reversal of 3428509409 is 9049058243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9049058243 = 1171 ⋅7727633.

It can be written as a sum of positive squares in 2 ways, for example, as 1855197184 + 1573312225 = 43072^2 + 39665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3428509409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3428509409.

It is not an unprimeable number, because it can be changed into a prime (3428509309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131865734 + ... + 131865759.

It is an arithmetic number, because the mean of its divisors is an integer number (923060229).

Almost surely, 2^3428509409 is an apocalyptic number.

It is an amenable number.

3428509409 is a deficient number, since it is larger than the sum of its proper divisors (263731507).

3428509409 is a wasteful number, since it uses less digits than its factorization.

3428509409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263731506.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 3428509409 is about 58553.4747816045. The cubic root of 3428509409 is about 1507.8857900790.

The spelling of 3428509409 in words is "three billion, four hundred twenty-eight million, five hundred nine thousand, four hundred nine".