6409291 has 4 divisors (see below), whose sum is σ = 7324912. Its totient is φ = 5493672.

The previous prime is 6409267. The next prime is 6409297. The reversal of 6409291 is 1929046.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6409291 - 2⁷ = 6409163 is a prime.

It is a super-2 number, since 2×6409291² = 82158022245362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6409297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457800 + ... + 457813.

It is an arithmetic number, because the mean of its divisors is an integer number (1831228).

Almost surely, 2^6409291 is an apocalyptic number.

6409291 is a deficient number, since it is larger than the sum of its proper divisors (915621).

6409291 is an equidigital number, since it uses as much as digits as its factorization.

6409291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915620.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 6409291 is about 2531.6577572808. The cubic root of 6409291 is about 185.7533536574.

The spelling of 6409291 in words is "six million, four hundred nine thousand, two hundred ninety-one".