3571989 has 8 divisors (see below), whose sum is σ = 5042880. Its totient is φ = 2241216.

The previous prime is 3571987. The next prime is 3571991. The reversal of 3571989 is 9891753.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3571987) and next prime (3571991).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3571989 - 2¹ = 3571987 is a prime.

It is a super-2 number, since 2×3571989² = 25518210832242, which contains 22 as substring.

It is a Curzon number.

3571989 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3571989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3571987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34969 + ... + 35070.

It is an arithmetic number, because the mean of its divisors is an integer number (630360).

Almost surely, 2^3571989 is an apocalyptic number.

It is an amenable number.

3571989 is a deficient number, since it is larger than the sum of its proper divisors (1470891).

3571989 is a wasteful number, since it uses less digits than its factorization.

3571989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70059.

The product of its digits is 68040, while the sum is 42.

The square root of 3571989 is about 1889.9706346925. The cubic root of 3571989 is about 152.8633493023.

It can be divided in two parts, 3571 and 989, that added together give a triangular number (4560 = T₉₅).

The spelling of 3571989 in words is "three million, five hundred seventy-one thousand, nine hundred eighty-nine".