4081789 has 4 divisors (see below), whose sum is σ = 4296640. Its totient is φ = 3866940.

The previous prime is 4081771. The next prime is 4081793. The reversal of 4081789 is 9871804.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4081789 - 2⁷ = 4081661 is a prime.

It is a super-2 number, since 2×4081789² = 33322002881042, 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 (4081799) 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, 107397 + ... + 107434.

It is an arithmetic number, because the mean of its divisors is an integer number (1074160).

Almost surely, 2^4081789 is an apocalyptic number.

It is an amenable number.

4081789 is a deficient number, since it is larger than the sum of its proper divisors (214851).

4081789 is a wasteful number, since it uses less digits than its factorization.

4081789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214850.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 4081789 is about 2020.3437826271. The cubic root of 4081789 is about 159.8147465275.

It can be divided in two parts, 408 and 1789, that added together give a cube (2197 = 13³).

The spelling of 4081789 in words is "four million, eighty-one thousand, seven hundred eighty-nine".