3891401 has 4 divisors (see below), whose sum is σ = 3996612. Its totient is φ = 3786192.

The previous prime is 3891389. The next prime is 3891403. The reversal of 3891401 is 1041983.

3891401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2253001 + 1638400 = 1501^2 + 1280^2 .

It is a cyclic number.

It is not a de Polignac number, because 3891401 - 2¹⁰ = 3890377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3891403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52550 + ... + 52623.

It is an arithmetic number, because the mean of its divisors is an integer number (999153).

Almost surely, 2^3891401 is an apocalyptic number.

It is an amenable number.

3891401 is a deficient number, since it is larger than the sum of its proper divisors (105211).

3891401 is a wasteful number, since it uses less digits than its factorization.

3891401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105210.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 3891401 is about 1972.6634279572. The cubic root of 3891401 is about 157.2903197834.

The spelling of 3891401 in words is "three million, eight hundred ninety-one thousand, four hundred one".