4321491 has 8 divisors (see below), whose sum is σ = 5790144. Its totient is φ = 2866920.

The previous prime is 4321483. The next prime is 4321501. The reversal of 4321491 is 1941234.

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

It is not a de Polignac number, because 4321491 - 2³ = 4321483 is a prime.

4321491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4321411) 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 7 ways as a sum of consecutive naturals, for example, 2781 + ... + 4046.

It is an arithmetic number, because the mean of its divisors is an integer number (723768).

Almost surely, 2^4321491 is an apocalyptic number.

4321491 is a deficient number, since it is larger than the sum of its proper divisors (1468653).

4321491 is a wasteful number, since it uses less digits than its factorization.

4321491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7041.

The product of its digits is 864, while the sum is 24.

The square root of 4321491 is about 2078.8196169942. The cubic root of 4321491 is about 162.8837918621.

The spelling of 4321491 in words is "four million, three hundred twenty-one thousand, four hundred ninety-one".