3891477 has 8 divisors (see below), whose sum is σ = 5199616. Its totient is φ = 2588832.

The previous prime is 3891469. The next prime is 3891493. The reversal of 3891477 is 7741983.

3891477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3891477 - 2³ = 3891469 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 8⁷ + 9 + 1 + 4⁸ + 7⁵ + 7⁶ .

It is a Duffinian number.

3891477 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891467) 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 7 ways as a sum of consecutive naturals, for example, 753 + ... + 2889.

It is an arithmetic number, because the mean of its divisors is an integer number (649952).

Almost surely, 2^3891477 is an apocalyptic number.

It is an amenable number.

3891477 is a deficient number, since it is larger than the sum of its proper divisors (1308139).

3891477 is a wasteful number, since it uses less digits than its factorization.

3891477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747.

The product of its digits is 42336, while the sum is 39.

The square root of 3891477 is about 1972.6826911594. The cubic root of 3891477 is about 157.2913437494.

The spelling of 3891477 in words is "three million, eight hundred ninety-one thousand, four hundred seventy-seven".