3893121 has 6 divisors (see below), whose sum is σ = 5623410. Its totient is φ = 2595408.

The previous prime is 3893111. The next prime is 3893137. The reversal of 3893121 is 1213983.

It can be written as a sum of positive squares in only one way, i.e., 2852721 + 1040400 = 1689^2 + 1020^2 .

It is not a de Polignac number, because 3893121 - 2⁵ = 3893089 is a prime.

It is a super-2 number, since 2×3893121² = 30312782241282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3893101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216276 + ... + 216293.

It is an arithmetic number, because the mean of its divisors is an integer number (937235).

Almost surely, 2^3893121 is an apocalyptic number.

It is an amenable number.

3893121 is a deficient number, since it is larger than the sum of its proper divisors (1730289).

3893121 is a wasteful number, since it uses less digits than its factorization.

3893121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432575 (or 432572 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 3893121 is about 1973.0993386041. The cubic root of 3893121 is about 157.3134904873.

The spelling of 3893121 in words is "three million, eight hundred ninety-three thousand, one hundred twenty-one".