3887831 has 2 divisors, whose sum is σ = 3887832. Its totient is φ = 3887830.

The previous prime is 3887789. The next prime is 3887839. The reversal of 3887831 is 1387883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3887831 - 2¹⁴ = 3871447 is a prime.

It is a super-2 number, since 2×3887831² = 30230459769122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3887839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1943915 + 1943916.

It is an arithmetic number, because the mean of its divisors is an integer number (1943916).

Almost surely, 2^3887831 is an apocalyptic number.

3887831 is a deficient number, since it is larger than the sum of its proper divisors (1).

3887831 is an equidigital number, since it uses as much as digits as its factorization.

3887831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 38.

The square root of 3887831 is about 1971.7583523343. The cubic root of 3887831 is about 157.2422053001.

The spelling of 3887831 in words is "three million, eight hundred eighty-seven thousand, eight hundred thirty-one".