3781097 has 4 divisors (see below), whose sum is σ = 3787140. Its totient is φ = 3775056.

The previous prime is 3781087. The next prime is 3781117. The reversal of 3781097 is 7901873.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2483776 + 1297321 = 1576^2 + 1139^2 .

It is a cyclic number.

It is not a de Polignac number, because 3781097 - 2¹⁶ = 3715561 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3781007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1958 + ... + 3375.

It is an arithmetic number, because the mean of its divisors is an integer number (946785).

Almost surely, 2^3781097 is an apocalyptic number.

It is an amenable number.

3781097 is a deficient number, since it is larger than the sum of its proper divisors (6043).

3781097 is an equidigital number, since it uses as much as digits as its factorization.

3781097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 3781097 is about 1944.5043070150. The cubic root of 3781097 is about 155.7898908203.

The spelling of 3781097 in words is "three million, seven hundred eighty-one thousand, ninety-seven".