4229391 has 4 divisors (see below), whose sum is σ = 5639192. Its totient is φ = 2819592.

The previous prime is 4229387. The next prime is 4229411. The reversal of 4229391 is 1939224.

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

It is not a de Polignac number, because 4229391 - 2² = 4229387 is a prime.

It is a D-number.

It is a Duffinian number.

4229391 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4229891) 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, 704896 + ... + 704901.

It is an arithmetic number, because the mean of its divisors is an integer number (1409798).

Almost surely, 2^4229391 is an apocalyptic number.

4229391 is a deficient number, since it is larger than the sum of its proper divisors (1409801).

4229391 is a wasteful number, since it uses less digits than its factorization.

4229391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409800.

The product of its digits is 3888, while the sum is 30.

The square root of 4229391 is about 2056.5483218247. The cubic root of 4229391 is about 161.7183415542.

The spelling of 4229391 in words is "four million, two hundred twenty-nine thousand, three hundred ninety-one".