3897157 has 8 divisors (see below), whose sum is σ = 4267872. Its totient is φ = 3529200.

The previous prime is 3897151. The next prime is 3897161. The reversal of 3897157 is 7517983.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3897157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897151) 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, 3307 + ... + 4327.

It is an arithmetic number, because the mean of its divisors is an integer number (533484).

Almost surely, 2^3897157 is an apocalyptic number.

It is an amenable number.

3897157 is a deficient number, since it is larger than the sum of its proper divisors (370715).

3897157 is a wasteful number, since it uses less digits than its factorization.

3897157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its digits is 52920, while the sum is 40.

The square root of 3897157 is about 1974.1218300804. The cubic root of 3897157 is about 157.3678340304.

The spelling of 3897157 in words is "three million, eight hundred ninety-seven thousand, one hundred fifty-seven".