3539697408 has 252 divisors, whose sum is σ = 11416210120. Its totient is φ = 1088391168.

The previous prime is 3539697373. The next prime is 3539697437. The reversal of 3539697408 is 8047969353.

3539697408 is a `hidden beast` number, since 3 + 539 + 69 + 7 + 40 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2425383 + ... + 2426841.

Almost surely, 2^3539697408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3539697408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5708105060).

3539697408 is an abundant number, since it is smaller than the sum of its proper divisors (7876512712).

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

3539697408 is an equidigital number, since it uses as much as digits as its factorization.

3539697408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1506 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The square root of 3539697408 is about 59495.3561885295. The cubic root of 3539697408 is about 1524.0131439129.

The spelling of 3539697408 in words is "three billion, five hundred thirty-nine million, six hundred ninety-seven thousand, four hundred eight".