4155389 has 4 divisors (see below), whose sum is σ = 4749024. Its totient is φ = 3561756.

The previous prime is 4155367. The next prime is 4155401. The reversal of 4155389 is 9835514.

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 4155389 - 2¹⁶ = 4089853 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155589) 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, 296807 + ... + 296820.

It is an arithmetic number, because the mean of its divisors is an integer number (1187256).

Almost surely, 2^4155389 is an apocalyptic number.

It is an amenable number.

4155389 is a deficient number, since it is larger than the sum of its proper divisors (593635).

4155389 is an equidigital number, since it uses as much as digits as its factorization.

4155389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593634.

The product of its digits is 21600, while the sum is 35.

The square root of 4155389 is about 2038.4771276617. The cubic root of 4155389 is about 160.7695866880.

The spelling of 4155389 in words is "four million, one hundred fifty-five thousand, three hundred eighty-nine".