4077989 has 4 divisors (see below), whose sum is σ = 4292640. Its totient is φ = 3863340.

The previous prime is 4077971. The next prime is 4078003. The reversal of 4077989 is 9897704.

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 4077989 - 2¹² = 4073893 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 (4077919) 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 3 ways as a sum of consecutive naturals, for example, 107297 + ... + 107334.

It is an arithmetic number, because the mean of its divisors is an integer number (1073160).

Almost surely, 2^4077989 is an apocalyptic number.

It is an amenable number.

4077989 is a deficient number, since it is larger than the sum of its proper divisors (214651).

4077989 is a wasteful number, since it uses less digits than its factorization.

4077989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214650.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 4077989 is about 2019.4031296400. The cubic root of 4077989 is about 159.7651371861.

It can be divided in two parts, 407 and 7989, that multiplied together give a palindrome (3251523).

The spelling of 4077989 in words is "four million, seventy-seven thousand, nine hundred eighty-nine".