4155391 has 8 divisors (see below), whose sum is σ = 4357584. Its totient is φ = 3958080.

The previous prime is 4155367. The next prime is 4155401. The reversal of 4155391 is 1935514.

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 4155391 - 2⁹ = 4154879 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4155301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585 + ... + 2941.

It is an arithmetic number, because the mean of its divisors is an integer number (544698).

Almost surely, 2^4155391 is an apocalyptic number.

4155391 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4155391 is a deficient number, since it is larger than the sum of its proper divisors (202193).

4155391 is a wasteful number, since it uses less digits than its factorization.

4155391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441.

The product of its digits is 2700, while the sum is 28.

The square root of 4155391 is about 2038.4776182240. The cubic root of 4155391 is about 160.7696124810.

The spelling of 4155391 in words is "four million, one hundred fifty-five thousand, three hundred ninety-one".