4539391 has 8 divisors (see below), whose sum is σ = 4829760. Its totient is φ = 4251648.

The previous prime is 4539383. The next prime is 4539413. The reversal of 4539391 is 1939354.

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

It is a cyclic number.

It is not a de Polignac number, because 4539391 - 2³ = 4539383 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 (4539331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3850 + ... + 4888.

It is an arithmetic number, because the mean of its divisors is an integer number (603720).

Almost surely, 2^4539391 is an apocalyptic number.

4539391 is the 1348-th centered pentagonal number.

4539391 is a deficient number, since it is larger than the sum of its proper divisors (290369).

4539391 is a wasteful number, since it uses less digits than its factorization.

4539391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313.

The product of its digits is 14580, while the sum is 34.

The square root of 4539391 is about 2130.5846615425. The cubic root of 4539391 is about 165.5766903604.

The spelling of 4539391 in words is "four million, five hundred thirty-nine thousand, three hundred ninety-one".