3929231 has 4 divisors (see below), whose sum is σ = 3935952. Its totient is φ = 3922512.

The previous prime is 3929221. The next prime is 3929249. The reversal of 3929231 is 1329293.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3929231 is a prime.

It is a super-2 number, since 2×3929231² = 30877712502722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3929194 and 3929203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3929201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2390 + ... + 3683.

It is an arithmetic number, because the mean of its divisors is an integer number (983988).

Almost surely, 2^3929231 is an apocalyptic number.

3929231 is a deficient number, since it is larger than the sum of its proper divisors (6721).

3929231 is an equidigital number, since it uses as much as digits as its factorization.

3929231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6720.

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

The square root of 3929231 is about 1982.2287960778. The cubic root of 3929231 is about 157.7983728360.

The spelling of 3929231 in words is "three million, nine hundred twenty-nine thousand, two hundred thirty-one".