3539969 has 4 divisors (see below), whose sum is σ = 3555396. Its totient is φ = 3524544.

The previous prime is 3539959. The next prime is 3539971. The reversal of 3539969 is 9699353.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9699353 = 23 ⋅421711.

It can be written as a sum of positive squares in 2 ways, for example, as 2356225 + 1183744 = 1535^2 + 1088^2 .

It is a cyclic number.

It is not a de Polignac number, because 3539969 - 2⁸ = 3539713 is a prime.

It is a super-2 number, since 2×3539969² = 25062761041922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3539929) 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, 7364 + ... + 7829.

It is an arithmetic number, because the mean of its divisors is an integer number (888849).

Almost surely, 2^3539969 is an apocalyptic number.

It is an amenable number.

3539969 is a deficient number, since it is larger than the sum of its proper divisors (15427).

3539969 is a wasteful number, since it uses less digits than its factorization.

3539969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15426.

The product of its digits is 196830, while the sum is 44.

The square root of 3539969 is about 1881.4805340476. The cubic root of 3539969 is about 152.4052120803.

It can be divided in two parts, 35 and 39969, that added together give a palindrome (40004).

The spelling of 3539969 in words is "three million, five hundred thirty-nine thousand, nine hundred sixty-nine".