4047389 has 4 divisors (see below), whose sum is σ = 4056000. Its totient is φ = 4038780.

The previous prime is 4047383. The next prime is 4047409. The reversal of 4047389 is 9837404.

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 4047389 - 2¹² = 4043293 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 (4047383) 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, 3557 + ... + 4554.

It is an arithmetic number, because the mean of its divisors is an integer number (1014000).

Almost surely, 2^4047389 is an apocalyptic number.

It is an amenable number.

4047389 is a deficient number, since it is larger than the sum of its proper divisors (8611).

4047389 is an equidigital number, since it uses as much as digits as its factorization.

4047389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8610.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 4047389 is about 2011.8123669965. The cubic root of 4047389 is about 159.3645236738.

The spelling of 4047389 in words is "four million, forty-seven thousand, three hundred eighty-nine".