6398091 has 24 divisors (see below), whose sum is σ = 10823904. Its totient is φ = 3565440.

The previous prime is 6398083. The next prime is 6398111. The reversal of 6398091 is 1908936.

It is not a de Polignac number, because 6398091 - 2³ = 6398083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6398081) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1345 + ... + 3821.

It is an arithmetic number, because the mean of its divisors is an integer number (450996).

Almost surely, 2^6398091 is an apocalyptic number.

6398091 is a deficient number, since it is larger than the sum of its proper divisors (4425813).

6398091 is a wasteful number, since it uses less digits than its factorization.

6398091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531 (or 2528 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 6398091 is about 2529.4448007419. Note that the first 3 decimals coincide. The cubic root of 6398091 is about 185.6450915232.

The spelling of 6398091 in words is "six million, three hundred ninety-eight thousand, ninety-one".