3509987712 has 128 divisors (see below), whose sum is σ = 11624083200. Its totient is φ = 911677440.

The previous prime is 3509987651. The next prime is 3509987717. The reversal of 3509987712 is 2177899053.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3509987717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29787 + ... + 88922.

It is an arithmetic number, because the mean of its divisors is an integer number (90813150).

Almost surely, 2^3509987712 is an apocalyptic number.

3509987712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3509987712 is an abundant number, since it is smaller than the sum of its proper divisors (8114095488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3509987712 is a wasteful number, since it uses less digits than its factorization.

3509987712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118744 (or 118732 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 3509987712 is about 59245.1492697925. The cubic root of 3509987712 is about 1519.7373322663.

The spelling of 3509987712 in words is "three billion, five hundred nine million, nine hundred eighty-seven thousand, seven hundred twelve".