3946397442 has 128 divisors (see below), whose sum is σ = 9228764160. Its totient is φ = 1114214400.

The previous prime is 3946397419. The next prime is 3946397443. The reversal of 3946397442 is 2447936493.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (3946397443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10579968 + ... + 10580340.

It is an arithmetic number, because the mean of its divisors is an integer number (72099720).

Almost surely, 2^3946397442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3946397442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4614382080).

3946397442 is an abundant number, since it is smaller than the sum of its proper divisors (5282366718).

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

3946397442 is a wasteful number, since it uses less digits than its factorization.

3946397442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its digits is 3919104, while the sum is 51.

The square root of 3946397442 is about 62820.3584994546. The cubic root of 3946397442 is about 1580.2784108541.

The spelling of 3946397442 in words is "three billion, nine hundred forty-six million, three hundred ninety-seven thousand, four hundred forty-two".