3858257 has 8 divisors (see below), whose sum is σ = 4170600. Its totient is φ = 3548160.

The previous prime is 3858251. The next prime is 3858259. The reversal of 3858257 is 7528583.

It can be written as a sum of positive squares in 4 ways, for example, as 614656 + 3243601 = 784^2 + 1801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3858257 - 2⁶ = 3858193 is a prime.

It is a super-2 number, since 2×3858257² = 29772294156098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3858257.

It is not an unprimeable number, because it can be changed into a prime (3858251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5507 + ... + 6167.

It is an arithmetic number, because the mean of its divisors is an integer number (521325).

Almost surely, 2^3858257 is an apocalyptic number.

It is an amenable number.

3858257 is a deficient number, since it is larger than the sum of its proper divisors (312343).

3858257 is a wasteful number, since it uses less digits than its factorization.

3858257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123.

The product of its digits is 67200, while the sum is 38.

The square root of 3858257 is about 1964.2446385316. The cubic root of 3858257 is about 156.8424860792.

The spelling of 3858257 in words is "three million, eight hundred fifty-eight thousand, two hundred fifty-seven".