2913409 has 8 divisors (see below), whose sum is σ = 3100680. Its totient is φ = 2737408.

The previous prime is 2913401. The next prime is 2913413. The reversal of 2913409 is 9043192.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 672400 + 2241009 = 820^2 + 1497^2 .

It is not a de Polignac number, because 2913409 - 2³ = 2913401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2913401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4617 + ... + 5209.

It is an arithmetic number, because the mean of its divisors is an integer number (387585).

2^2913409 is an apocalyptic number.

It is an amenable number.

2913409 is a deficient number, since it is larger than the sum of its proper divisors (187271).

2913409 is an frugal number, since it uses more digits than its factorization.

2913409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 2913409 is about 1706.8711140564. The cubic root of 2913409 is about 142.8237677748.

The spelling of 2913409 in words is "two million, nine hundred thirteen thousand, four hundred nine".