3845397 has 4 divisors (see below), whose sum is σ = 5127200. Its totient is φ = 2563596.

The previous prime is 3845389. The next prime is 3845407. The reversal of 3845397 is 7935483.

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 not a de Polignac number, because 3845397 - 2³ = 3845389 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 8⁷ + 4⁷ + 5³ + 3¹³ + 9² + 7⁶ .

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3845327) 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, 640897 + ... + 640902.

It is an arithmetic number, because the mean of its divisors is an integer number (1281800).

Almost surely, 2^3845397 is an apocalyptic number.

It is an amenable number.

3845397 is a deficient number, since it is larger than the sum of its proper divisors (1281803).

3845397 is a wasteful number, since it uses less digits than its factorization.

3845397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281802.

The product of its digits is 90720, while the sum is 39.

The square root of 3845397 is about 1960.9683832229. The cubic root of 3845397 is about 156.6680342922.

The spelling of 3845397 in words is "three million, eight hundred forty-five thousand, three hundred ninety-seven".