4069989 has 36 divisors (see below), whose sum is σ = 7469280. Its totient is φ = 2111760.

The previous prime is 4069937. The next prime is 4069991. The reversal of 4069989 is 9899604.

It is not a de Polignac number, because 4069989 - 2⁷ = 4069861 is a prime.

4069989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4069489) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4432 + ... + 5270.

It is an arithmetic number, because the mean of its divisors is an integer number (207480).

Almost surely, 2^4069989 is an apocalyptic number.

4069989 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

4069989 is a deficient number, since it is larger than the sum of its proper divisors (3399291).

4069989 is a wasteful number, since it uses less digits than its factorization.

4069989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 4069989 is about 2017.4213739326. The cubic root of 4069989 is about 159.6605956425.

The spelling of 4069989 in words is "four million, sixty-nine thousand, nine hundred eighty-nine".