3747391 has 2 divisors, whose sum is σ = 3747392. Its totient is φ = 3747390.

The previous prime is 3747383. The next prime is 3747431. The reversal of 3747391 is 1937473.

3747391 is nontrivially palindromic in base 9.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3747391 - 2³ = 3747383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3747371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1873695 + 1873696.

It is an arithmetic number, because the mean of its divisors is an integer number (1873696).

Almost surely, 2^3747391 is an apocalyptic number.

3747391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3747391 is an equidigital number, since it uses as much as digits as its factorization.

3747391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15876, while the sum is 34.

The square root of 3747391 is about 1935.8179149910. The cubic root of 3747391 is about 155.3255868515.

The spelling of 3747391 in words is "three million, seven hundred forty-seven thousand, three hundred ninety-one".