4006257 has 8 divisors (see below), whose sum is σ = 5367840. Its totient is φ = 2657760.

The previous prime is 4006253. The next prime is 4006259. The reversal of 4006257 is 7526004.

It is a happy number.

4006257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 4006257 - 2² = 4006253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4006253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2532 + ... + 3797.

It is an arithmetic number, because the mean of its divisors is an integer number (670980).

Almost surely, 2^4006257 is an apocalyptic number.

It is an amenable number.

4006257 is a deficient number, since it is larger than the sum of its proper divisors (1361583).

4006257 is a wasteful number, since it uses less digits than its factorization.

4006257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 4006257 is about 2001.5636387585. The cubic root of 4006257 is about 158.8228318133.

The spelling of 4006257 in words is "four million, six thousand, two hundred fifty-seven".