3739991 has 2 divisors, whose sum is σ = 3739992. Its totient is φ = 3739990.

The previous prime is 3739987. The next prime is 3739993. The reversal of 3739991 is 1999373.

3739991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3739991 - 2² = 3739987 is a prime.

Together with 3739993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3739993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1869995 + 1869996.

It is an arithmetic number, because the mean of its divisors is an integer number (1869996).

Almost surely, 2^3739991 is an apocalyptic number.

3739991 is a deficient number, since it is larger than the sum of its proper divisors (1).

3739991 is an equidigital number, since it uses as much as digits as its factorization.

3739991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45927, while the sum is 41.

The square root of 3739991 is about 1933.9056336854. The cubic root of 3739991 is about 155.2232786273.

The spelling of 3739991 in words is "three million, seven hundred thirty-nine thousand, nine hundred ninety-one".