3769991 has 4 divisors (see below), whose sum is σ = 3861984. Its totient is φ = 3678000.

The previous prime is 3769981. The next prime is 3769993. The reversal of 3769991 is 1999673.

It is a happy number.

3769991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 3769991 - 2¹⁰ = 3768967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3769993) 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 in 3 ways as a sum of consecutive naturals, for example, 45935 + ... + 46016.

It is an arithmetic number, because the mean of its divisors is an integer number (965496).

Almost surely, 2^3769991 is an apocalyptic number.

3769991 is a deficient number, since it is larger than the sum of its proper divisors (91993).

3769991 is an equidigital number, since it uses as much as digits as its factorization.

3769991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91992.

The product of its digits is 91854, while the sum is 44.

The square root of 3769991 is about 1941.6464662755. The cubic root of 3769991 is about 155.6372103235.

The spelling of 3769991 in words is "three million, seven hundred sixty-nine thousand, nine hundred ninety-one".