3992231 has 2 divisors, whose sum is σ = 3992232. Its totient is φ = 3992230.

The previous prime is 3992221. The next prime is 3992243. The reversal of 3992231 is 1322993.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3992231 is a prime.

It is a super-2 number, since 2×3992231² = 31875816714722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3992194 and 3992203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3992201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996115 + 1996116.

It is an arithmetic number, because the mean of its divisors is an integer number (1996116).

Almost surely, 2^3992231 is an apocalyptic number.

3992231 is a deficient number, since it is larger than the sum of its proper divisors (1).

3992231 is an equidigital number, since it uses as much as digits as its factorization.

3992231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 29.

The square root of 3992231 is about 1998.0568059993. The cubic root of 3992231 is about 158.6372675995.

The spelling of 3992231 in words is "three million, nine hundred ninety-two thousand, two hundred thirty-one".