4072857 has 4 divisors (see below), whose sum is σ = 5430480. Its totient is φ = 2715236.

The previous prime is 4072853. The next prime is 4072867. The reversal of 4072857 is 7582704.

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 not a de Polignac number, because 4072857 - 2² = 4072853 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4072853) 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, 678807 + ... + 678812.

It is an arithmetic number, because the mean of its divisors is an integer number (1357620).

Almost surely, 2^4072857 is an apocalyptic number.

It is an amenable number.

4072857 is a deficient number, since it is larger than the sum of its proper divisors (1357623).

4072857 is a wasteful number, since it uses less digits than its factorization.

4072857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357622.

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 4072857 is about 2018.1320571261. The cubic root of 4072857 is about 159.6980895254.

The spelling of 4072857 in words is "four million, seventy-two thousand, eight hundred fifty-seven".