3723391 has 16 divisors (see below), whose sum is σ = 4582656. Its totient is φ = 2952576.

The previous prime is 3723389. The next prime is 3723407. The reversal of 3723391 is 1933273.

3723391 = T₄₄ + T₄₅ + ... + T₂₈₁.

It is a cyclic number.

It is not a de Polignac number, because 3723391 - 2¹ = 3723389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3720391) 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 15 ways as a sum of consecutive naturals, for example, 7740 + ... + 8206.

It is an arithmetic number, because the mean of its divisors is an integer number (286416).

Almost surely, 2^3723391 is an apocalyptic number.

3723391 is a deficient number, since it is larger than the sum of its proper divisors (859265).

3723391 is a wasteful number, since it uses less digits than its factorization.

3723391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558.

The product of its digits is 3402, while the sum is 28.

The square root of 3723391 is about 1929.6090277567. The cubic root of 3723391 is about 154.9932844819.

It can be divided in two parts, 3723 and 391, that added together give a palindrome (4114).

The spelling of 3723391 in words is "three million, seven hundred twenty-three thousand, three hundred ninety-one".