3894121 has 16 divisors (see below), whose sum is σ = 4912128. Its totient is φ = 2998800.

The previous prime is 3894119. The next prime is 3894131. The reversal of 3894121 is 1214983.

It is a happy number.

It is not a de Polignac number, because 3894121 - 2¹ = 3894119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3894121.

It is not an unprimeable number, because it can be changed into a prime (3894101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7686 + ... + 8176.

It is an arithmetic number, because the mean of its divisors is an integer number (307008).

Almost surely, 2^3894121 is an apocalyptic number.

It is an amenable number.

3894121 is a deficient number, since it is larger than the sum of its proper divisors (1018007).

3894121 is a wasteful number, since it uses less digits than its factorization.

3894121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612.

The product of its digits is 1728, while the sum is 28.

The square root of 3894121 is about 1973.3527307605. The cubic root of 3894121 is about 157.3269586895.

It can be divided in two parts, 3894 and 121, that multiplied together give a palindrome (471174).

The spelling of 3894121 in words is "three million, eight hundred ninety-four thousand, one hundred twenty-one".