3958247 has 4 divisors (see below), whose sum is σ = 3965376. Its totient is φ = 3951120.

The previous prime is 3958243. The next prime is 3958259. The reversal of 3958247 is 7428593.

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

It is a cyclic number.

It is not a de Polignac number, because 3958247 - 2² = 3958243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3958247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3958243) 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, 2654 + ... + 3867.

It is an arithmetic number, because the mean of its divisors is an integer number (991344).

Almost surely, 2^3958247 is an apocalyptic number.

3958247 is a deficient number, since it is larger than the sum of its proper divisors (7129).

3958247 is an equidigital number, since it uses as much as digits as its factorization.

3958247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7128.

The product of its digits is 60480, while the sum is 38.

The square root of 3958247 is about 1989.5343676348. The cubic root of 3958247 is about 158.1858492449.

The spelling of 3958247 in words is "three million, nine hundred fifty-eight thousand, two hundred forty-seven".