408347649 has 24 divisors (see below), whose sum is σ = 614053440. Its totient is φ = 271176336.

The previous prime is 408347617. The next prime is 408347657. The reversal of 408347649 is 946743804.

It is not a de Polignac number, because 408347649 - 2⁵ = 408347617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (408347699) 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 23 ways as a sum of consecutive naturals, for example, 62244 + ... + 68490.

It is an arithmetic number, because the mean of its divisors is an integer number (25585560).

Almost surely, 2^408347649 is an apocalyptic number.

It is an amenable number.

408347649 is a deficient number, since it is larger than the sum of its proper divisors (205705791).

408347649 is an equidigital number, since it uses as much as digits as its factorization.

408347649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6531 (or 6519 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 408347649 is about 20207.6136394182. The cubic root of 408347649 is about 741.8965528561.

The spelling of 408347649 in words is "four hundred eight million, three hundred forty-seven thousand, six hundred forty-nine".