2981409 has 16 divisors (see below), whose sum is σ = 4292352. Its totient is φ = 1833728.

The previous prime is 2981401. The next prime is 2981417. The reversal of 2981409 is 9041892.

It is an interprime number because it is at equal distance from previous prime (2981401) and next prime (2981417).

It is a cyclic number.

It is not a de Polignac number, because 2981409 - 2³ = 2981401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2981409.

It is not an unprimeable number, because it can be changed into a prime (2981401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2152 + ... + 3254.

It is an arithmetic number, because the mean of its divisors is an integer number (268272).

2^2981409 is an apocalyptic number.

It is an amenable number.

2981409 is a deficient number, since it is larger than the sum of its proper divisors (1310943).

2981409 is a wasteful number, since it uses less digits than its factorization.

2981409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 2981409 is about 1726.6757078270. The cubic root of 2981409 is about 143.9264188122.

The spelling of 2981409 in words is "two million, nine hundred eighty-one thousand, four hundred nine".