3942659394 has 64 divisors (see below), whose sum is σ = 9125326080. Its totient is φ = 1260645120.

The previous prime is 3942659389. The next prime is 3942659407. The reversal of 3942659394 is 4939562493.

3942659394 is a `hidden beast` number, since 3 + 9 + 42 + 6 + 593 + 9 + 4 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3942659394.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127962 + ... + 155754.

It is an arithmetic number, because the mean of its divisors is an integer number (142583220).

Almost surely, 2^3942659394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3942659394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4562663040).

3942659394 is an abundant number, since it is smaller than the sum of its proper divisors (5182666686).

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

3942659394 is a wasteful number, since it uses less digits than its factorization.

3942659394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27912 (or 27906 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 54.

The square root of 3942659394 is about 62790.5995671327. The cubic root of 3942659394 is about 1579.7793039498.

The spelling of 3942659394 in words is "three billion, nine hundred forty-two million, six hundred fifty-nine thousand, three hundred ninety-four".