3091398 has 8 divisors (see below), whose sum is σ = 6182808. Its totient is φ = 1030464.

The previous prime is 3091397. The next prime is 3091409. The reversal of 3091398 is 8931903.

It is a sphenic number, since it is the product of 3 distinct primes.

3091398 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3091391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257611 + ... + 257622.

It is an arithmetic number, because the mean of its divisors is an integer number (772851).

Almost surely, 2^3091398 is an apocalyptic number.

3091398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3091398 is a wasteful number, since it uses less digits than its factorization.

3091398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515238.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 3091398 is about 1758.2371853649. The cubic root of 3091398 is about 145.6749822595.

The spelling of 3091398 in words is "three million, ninety-one thousand, three hundred ninety-eight".