4330391 has 4 divisors (see below), whose sum is σ = 4663512. Its totient is φ = 3997272.

The previous prime is 4330373. The next prime is 4330409. The reversal of 4330391 is 1930334.

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

It is an interprime number because it is at equal distance from previous prime (4330373) and next prime (4330409).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4330391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4330301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166541 + ... + 166566.

It is an arithmetic number, because the mean of its divisors is an integer number (1165878).

Almost surely, 2^4330391 is an apocalyptic number.

4330391 is a deficient number, since it is larger than the sum of its proper divisors (333121).

4330391 is a wasteful number, since it uses less digits than its factorization.

4330391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333120.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 4330391 is about 2080.9591538519. The cubic root of 4330391 is about 162.9955335196.

The spelling of 4330391 in words is "four million, three hundred thirty thousand, three hundred ninety-one".