3994213392 has 120 divisors (see below), whose sum is σ = 12102225408. Its totient is φ = 1222444800.

The previous prime is 3994213387. The next prime is 3994213397. The reversal of 3994213392 is 2933124993.

3994213392 is a `hidden beast` number, since 399 + 42 + 133 + 92 = 666.

It is an interprime number because it is at equal distance from previous prime (3994213387) and next prime (3994213397).

It is a super-3 number, since 3×3994213392³ (a number of 30 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (3994213397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351967 + ... + 363137.

Almost surely, 2^3994213392 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 3994213392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6051112704).

3994213392 is an abundant number, since it is smaller than the sum of its proper divisors (8108012016).

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

3994213392 is a wasteful number, since it uses less digits than its factorization.

3994213392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11389 (or 11380 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 3994213392 is about 63199.7894933203. The cubic root of 3994213392 is about 1586.6352102450.

The spelling of 3994213392 in words is "three billion, nine hundred ninety-four million, two hundred thirteen thousand, three hundred ninety-two".