4212389 has 4 divisors (see below), whose sum is σ = 4216800. Its totient is φ = 4207980.

The previous prime is 4212371. The next prime is 4212401. The reversal of 4212389 is 9832124.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4212389 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4212589) 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, 107 + ... + 2904.

It is an arithmetic number, because the mean of its divisors is an integer number (1054200).

Almost surely, 2^4212389 is an apocalyptic number.

It is an amenable number.

4212389 is a deficient number, since it is larger than the sum of its proper divisors (4411).

4212389 is a wasteful number, since it uses less digits than its factorization.

4212389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4410.

The product of its digits is 3456, while the sum is 29.

The square root of 4212389 is about 2052.4105339819. The cubic root of 4212389 is about 161.5013498850.

It can be divided in two parts, 4 and 212389, that multiplied together give a triangular number (849556 = T₁₃₀₃).

The spelling of 4212389 in words is "four million, two hundred twelve thousand, three hundred eighty-nine".