3520403989 has 32 divisors (see below), whose sum is σ = 3968870400. Its totient is φ = 3109370880.

The previous prime is 3520403977. The next prime is 3520404029. The reversal of 3520403989 is 9893040253.

It is a cyclic number.

It is not a de Polignac number, because 3520403989 - 2¹⁵ = 3520371221 is a prime.

It is a super-2 number, since 2×3520403989² = 24786488491534224242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3520403959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1839297 + ... + 1841209.

It is an arithmetic number, because the mean of its divisors is an integer number (124027200).

Almost surely, 2^3520403989 is an apocalyptic number.

It is an amenable number.

3520403989 is a deficient number, since it is larger than the sum of its proper divisors (448466411).

3520403989 is a wasteful number, since it uses less digits than its factorization.

3520403989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 3520403989 is about 59332.9924156872. The cubic root of 3520403989 is about 1521.2391771905.

The spelling of 3520403989 in words is "three billion, five hundred twenty million, four hundred three thousand, nine hundred eighty-nine".