3890657 has 4 divisors (see below), whose sum is σ = 4059840. Its totient is φ = 3721476.

The previous prime is 3890651. The next prime is 3890659. The reversal of 3890657 is 7560983.

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 a de Polignac number, because none of the positive numbers 2^k-3890657 is a prime.

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 3890657.

It is not an unprimeable number, because it can be changed into a prime (3890651) 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, 84557 + ... + 84602.

It is an arithmetic number, because the mean of its divisors is an integer number (1014960).

Almost surely, 2^3890657 is an apocalyptic number.

It is an amenable number.

3890657 is a deficient number, since it is larger than the sum of its proper divisors (169183).

3890657 is a wasteful number, since it uses less digits than its factorization.

3890657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169182.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 3890657 is about 1972.4748414112. The cubic root of 3890657 is about 157.2802949914.

The spelling of 3890657 in words is "three million, eight hundred ninety thousand, six hundred fifty-seven".