3811397 has 4 divisors (see below), whose sum is σ = 3841536. Its totient is φ = 3781260.

The previous prime is 3811387. The next prime is 3811411. The reversal of 3811397 is 7931183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3811397 - 2⁸ = 3811141 is a prime.

It is a Duffinian number.

3811397 is a modest number, since divided by 1397 gives 381 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3811387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14879 + ... + 15132.

It is an arithmetic number, because the mean of its divisors is an integer number (960384).

Almost surely, 2^3811397 is an apocalyptic number.

It is an amenable number.

3811397 is a deficient number, since it is larger than the sum of its proper divisors (30139).

3811397 is a wasteful number, since it uses less digits than its factorization.

3811397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30138.

The product of its digits is 4536, while the sum is 32.

The square root of 3811397 is about 1952.2799491876. The cubic root of 3811397 is about 156.2049273727.

The spelling of 3811397 in words is "three million, eight hundred eleven thousand, three hundred ninety-seven".