3891455 has 8 divisors (see below), whose sum is σ = 4726512. Its totient is φ = 3075328.

The previous prime is 3891451. The next prime is 3891467. The reversal of 3891455 is 5541983.

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 3891455 - 2² = 3891451 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891451) 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, 4274 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (590814).

Almost surely, 2^3891455 is an apocalyptic number.

3891455 is a deficient number, since it is larger than the sum of its proper divisors (835057).

3891455 is an equidigital number, since it uses as much as digits as its factorization.

3891455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9465.

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

The square root of 3891455 is about 1972.6771149887. The cubic root of 3891455 is about 157.2910473395.

The spelling of 3891455 in words is "three million, eight hundred ninety-one thousand, four hundred fifty-five".