3998374 has 4 divisors (see below), whose sum is σ = 5997564. Its totient is φ = 1999186.

The previous prime is 3998369. The next prime is 3998377. The reversal of 3998374 is 4738993.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3998374.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999592 + ... + 999595.

It is an arithmetic number, because the mean of its divisors is an integer number (1499391).

Almost surely, 2^3998374 is an apocalyptic number.

3998374 is a deficient number, since it is larger than the sum of its proper divisors (1999190).

3998374 is a wasteful number, since it uses less digits than its factorization.

3998374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999189.

The product of its digits is 163296, while the sum is 43.

The square root of 3998374 is about 1999.5934586810. The cubic root of 3998374 is about 158.7185929974.

The spelling of 3998374 in words is "three million, nine hundred ninety-eight thousand, three hundred seventy-four".