3997485 has 16 divisors (see below), whose sum is σ = 7106880. Its totient is φ = 2131920.

The previous prime is 3997471. The next prime is 3997493. The reversal of 3997485 is 5847993.

It is not a de Polignac number, because 3997485 - 2⁵ = 3997453 is a prime.

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

It is a Curzon number.

3997485 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3997485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14671 + ... + 14940.

It is an arithmetic number, because the mean of its divisors is an integer number (444180).

Almost surely, 2^3997485 is an apocalyptic number.

It is an amenable number.

3997485 is a deficient number, since it is larger than the sum of its proper divisors (3109395).

3997485 is a wasteful number, since it uses less digits than its factorization.

3997485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29625 (or 29619 counting only the distinct ones).

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

The square root of 3997485 is about 1999.3711511373. The cubic root of 3997485 is about 158.7068289413.

The spelling of 3997485 in words is "three million, nine hundred ninety-seven thousand, four hundred eighty-five".