3823991 has 2 divisors, whose sum is σ = 3823992. Its totient is φ = 3823990.

The previous prime is 3823973. The next prime is 3824017. The reversal of 3823991 is 1993283.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3823991 - 2⁶ = 3823927 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3823901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1911995 + 1911996.

It is an arithmetic number, because the mean of its divisors is an integer number (1911996).

Almost surely, 2^3823991 is an apocalyptic number.

3823991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3823991 is an equidigital number, since it uses as much as digits as its factorization.

3823991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 35.

The square root of 3823991 is about 1955.5027486557. The cubic root of 3823991 is about 156.3767875450.

The spelling of 3823991 in words is "three million, eight hundred twenty-three thousand, nine hundred ninety-one".