3870957 has 4 divisors (see below), whose sum is σ = 5161280. Its totient is φ = 2580636.

The previous prime is 3870953. The next prime is 3870959. The reversal of 3870957 is 7590783.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7590783 = 3 ⋅2530261.

It is not a de Polignac number, because 3870957 - 2² = 3870953 is a prime.

It is a D-number.

It is a Duffinian number.

3870957 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3870953) 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, 645157 + ... + 645162.

It is an arithmetic number, because the mean of its divisors is an integer number (1290320).

Almost surely, 2^3870957 is an apocalyptic number.

It is an amenable number.

3870957 is a deficient number, since it is larger than the sum of its proper divisors (1290323).

3870957 is a wasteful number, since it uses less digits than its factorization.

3870957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290322.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 3870957 is about 1967.4747774749. The cubic root of 3870957 is about 157.0143873653.

The spelling of 3870957 in words is "three million, eight hundred seventy thousand, nine hundred fifty-seven".