4006247 has 4 divisors (see below), whose sum is σ = 4578576. Its totient is φ = 3433920.

The previous prime is 4006243. The next prime is 4006253. The reversal of 4006247 is 7426004.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4006247 - 2² = 4006243 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 (4006241) 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, 286154 + ... + 286167.

It is an arithmetic number, because the mean of its divisors is an integer number (1144644).

Almost surely, 2^4006247 is an apocalyptic number.

4006247 is a deficient number, since it is larger than the sum of its proper divisors (572329).

4006247 is an equidigital number, since it uses as much as digits as its factorization.

4006247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572328.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 4006247 is about 2001.5611407099. The cubic root of 4006247 is about 158.8226996675.

The spelling of 4006247 in words is "four million, six thousand, two hundred forty-seven".