3998475 has 36 divisors (see below), whose sum is σ = 7718256. Its totient is φ = 1967040.

The previous prime is 3998461. The next prime is 3998497. The reversal of 3998475 is 5748993.

It is not a de Polignac number, because 3998475 - 2⁴ = 3998459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

3998475 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3998475.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2242 + ... + 3608.

It is an arithmetic number, because the mean of its divisors is an integer number (214396).

Almost surely, 2^3998475 is an apocalyptic number.

3998475 is a deficient number, since it is larger than the sum of its proper divisors (3719781).

3998475 is a wasteful number, since it uses less digits than its factorization.

3998475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396 (or 1388 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 3998475 is about 1999.6187136552. The cubic root of 3998475 is about 158.7199294109.

The spelling of 3998475 in words is "three million, nine hundred ninety-eight thousand, four hundred seventy-five".