4081398 has 16 divisors (see below), whose sum is σ = 8426496. Its totient is φ = 1316520.

The previous prime is 4081397. The next prime is 4081421. The reversal of 4081398 is 8931804.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4081393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10786 + ... + 11157.

It is an arithmetic number, because the mean of its divisors is an integer number (526656).

Almost surely, 2^4081398 is an apocalyptic number.

4081398 is an abundant number, since it is smaller than the sum of its proper divisors (4345098).

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

4081398 is a wasteful number, since it uses less digits than its factorization.

4081398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21979.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 4081398 is about 2020.2470145999. The cubic root of 4081398 is about 159.8096434088.

The spelling of 4081398 in words is "four million, eighty-one thousand, three hundred ninety-eight".