4549381 has 4 divisors (see below), whose sum is σ = 4575852. Its totient is φ = 4522912.

The previous prime is 4549351. The next prime is 4549393. The reversal of 4549381 is 1839454.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3272481 + 1276900 = 1809^2 + 1130^2 .

It is not a de Polignac number, because 4549381 - 2⁷ = 4549253 is a prime.

It is a super-2 number, since 2×4549381² = 41393734966322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4549301) 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, 12976 + ... + 13321.

It is an arithmetic number, because the mean of its divisors is an integer number (1143963).

Almost surely, 2^4549381 is an apocalyptic number.

It is an amenable number.

4549381 is a deficient number, since it is larger than the sum of its proper divisors (26471).

4549381 is a wasteful number, since it uses less digits than its factorization.

4549381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26470.

The product of its digits is 17280, while the sum is 34.

The square root of 4549381 is about 2132.9277999970. The cubic root of 4549381 is about 165.6980648794.

The spelling of 4549381 in words is "four million, five hundred forty-nine thousand, three hundred eighty-one".