3890257 has 6 divisors (see below), whose sum is σ = 4525458. Its totient is φ = 3334464.

The previous prime is 3890239. The next prime is 3890261. The reversal of 3890257 is 7520983.

It can be written as a sum of positive squares in only one way, i.e., 3519376 + 370881 = 1876^2 + 609^2 .

It is not a de Polignac number, because 3890257 - 2⁷ = 3890129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3890267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39648 + ... + 39745.

It is an arithmetic number, because the mean of its divisors is an integer number (754243).

Almost surely, 2^3890257 is an apocalyptic number.

It is an amenable number.

3890257 is a deficient number, since it is larger than the sum of its proper divisors (635201).

3890257 is an equidigital number, since it uses as much as digits as its factorization.

3890257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79407 (or 79400 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 3890257 is about 1972.3734433418. The cubic root of 3890257 is about 157.2749047900.

The spelling of 3890257 in words is "three million, eight hundred ninety thousand, two hundred fifty-seven".