4391992 has 32 divisors (see below), whose sum is σ = 9298800. Its totient is φ = 1926400.

The previous prime is 4391969. The next prime is 4391993. The reversal of 4391992 is 2991934.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1692 + ... + 3412.

Almost surely, 2^4391992 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 4391992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4649400).

4391992 is an abundant number, since it is smaller than the sum of its proper divisors (4906808).

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

4391992 is a wasteful number, since it uses less digits than its factorization.

4391992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1763 counting only the distinct ones).

The product of its digits is 17496, while the sum is 37.

The square root of 4391992 is about 2095.7079949268. The cubic root of 4391992 is about 163.7647827689.

The spelling of 4391992 in words is "four million, three hundred ninety-one thousand, nine hundred ninety-two".