3985427 has 4 divisors (see below), whose sum is σ = 3991560. Its totient is φ = 3979296.

The previous prime is 3985409. The next prime is 3985433. The reversal of 3985427 is 7245893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7245893 = 17 ⋅426229.

It is a cyclic number.

It is not a de Polignac number, because 3985427 - 2⁶ = 3985363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3985027) 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, 1958 + ... + 3435.

It is an arithmetic number, because the mean of its divisors is an integer number (997890).

Almost surely, 2^3985427 is an apocalyptic number.

3985427 is a deficient number, since it is larger than the sum of its proper divisors (6133).

3985427 is an equidigital number, since it uses as much as digits as its factorization.

3985427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6132.

The product of its digits is 60480, while the sum is 38.

The square root of 3985427 is about 1996.3534256238. The cubic root of 3985427 is about 158.5470939812.

The spelling of 3985427 in words is "three million, nine hundred eighty-five thousand, four hundred twenty-seven".