2949409 has 2 divisors, whose sum is σ = 2949410. Its totient is φ = 2949408.

The previous prime is 2949403. The next prime is 2949421. The reversal of 2949409 is 9049492.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1677025 + 1272384 = 1295^2 + 1128^2 .

It is a cyclic number.

It is not a de Polignac number, because 2949409 - 2⁵ = 2949377 is a prime.

2949409 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2949403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1474704 + 1474705.

It is an arithmetic number, because the mean of its divisors is an integer number (1474705).

2^2949409 is an apocalyptic number.

It is an amenable number.

2949409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2949409 is an equidigital number, since it uses as much as digits as its factorization.

2949409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 2949409 is about 1717.3843483624. The cubic root of 2949409 is about 143.4096360756.

The spelling of 2949409 in words is "two million, nine hundred forty-nine thousand, four hundred nine".