4012389 has 16 divisors (see below), whose sum is σ = 5985600. Its totient is φ = 2656368.

The previous prime is 4012381. The next prime is 4012441. The reversal of 4012389 is 9832104.

It is not a de Polignac number, because 4012389 - 2³ = 4012381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4012381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4242 + ... + 5100.

It is an arithmetic number, because the mean of its divisors is an integer number (374100).

Almost surely, 2^4012389 is an apocalyptic number.

It is an amenable number.

4012389 is a deficient number, since it is larger than the sum of its proper divisors (1973211).

4012389 is a wasteful number, since it uses less digits than its factorization.

4012389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041 (or 1035 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 4012389 is about 2003.0948554674. The cubic root of 4012389 is about 158.9038222191.

The spelling of 4012389 in words is "four million, twelve thousand, three hundred eighty-nine".