3947242590 has 120 divisors (see below), whose sum is σ = 11202543000. Its totient is φ = 997124256.

The previous prime is 3947242567. The next prime is 3947242591. The reversal of 3947242590 is 952427493.

3947242590 is a `hidden beast` number, since 39 + 4 + 7 + 24 + 2 + 590 = 666.

3947242590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947242591) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 285661 + ... + 299159.

It is an arithmetic number, because the mean of its divisors is an integer number (93354525).

Almost surely, 2^3947242590 is an apocalyptic number.

3947242590 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3947242590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5601271500).

3947242590 is an abundant number, since it is smaller than the sum of its proper divisors (7255300410).

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

3947242590 is a wasteful number, since it uses less digits than its factorization.

3947242590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13556 (or 13528 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 3947242590 is about 62827.0848440384. The cubic root of 3947242590 is about 1580.3912119450.

The spelling of 3947242590 in words is "three billion, nine hundred forty-seven million, two hundred forty-two thousand, five hundred ninety".