4013998 has 8 divisors (see below), whose sum is σ = 6077592. Its totient is φ = 1988136.

The previous prime is 4013993. The next prime is 4014001. The reversal of 4013998 is 8993104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4013998² = 32224359888008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013993) 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, 9165 + ... + 9592.

It is an arithmetic number, because the mean of its divisors is an integer number (759699).

Almost surely, 2^4013998 is an apocalyptic number.

4013998 is a deficient number, since it is larger than the sum of its proper divisors (2063594).

4013998 is a wasteful number, since it uses less digits than its factorization.

4013998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18866.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 4013998 is about 2003.4964437203. The cubic root of 4013998 is about 158.9250599473.

The spelling of 4013998 in words is "four million, thirteen thousand, nine hundred ninety-eight".