4078992 has 20 divisors (see below), whose sum is σ = 10537520. Its totient is φ = 1359648.

The previous prime is 4078969. The next prime is 4078993. The reversal of 4078992 is 2998704.

It is a plaindrome in base 15.

It is a zygodrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 4078992.

It is not an unprimeable number, because it can be changed into a prime (4078993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42442 + ... + 42537.

It is an arithmetic number, because the mean of its divisors is an integer number (526876).

Almost surely, 2^4078992 is an apocalyptic number.

It is an amenable number.

4078992 is an abundant number, since it is smaller than the sum of its proper divisors (6458528).

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

4078992 is a wasteful number, since it uses less digits than its factorization.

4078992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84990 (or 84984 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 4078992 is about 2019.6514550783. The cubic root of 4078992 is about 159.7782344339.

The spelling of 4078992 in words is "four million, seventy-eight thousand, nine hundred ninety-two".