3898005 has 8 divisors (see below), whose sum is σ = 6236832. Its totient is φ = 2078928.

The previous prime is 3898003. The next prime is 3898007. The reversal of 3898005 is 5008983.

It is an interprime number because it is at equal distance from previous prime (3898003) and next prime (3898007).

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

It is not a de Polignac number, because 3898005 - 2¹ = 3898003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3898001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129919 + ... + 129948.

It is an arithmetic number, because the mean of its divisors is an integer number (779604).

Almost surely, 2^3898005 is an apocalyptic number.

It is an amenable number.

3898005 is a deficient number, since it is larger than the sum of its proper divisors (2338827).

3898005 is a wasteful number, since it uses less digits than its factorization.

3898005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259875.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 3898005 is about 1974.3365974423. The cubic root of 3898005 is about 157.3792473287.

The spelling of 3898005 in words is "three million, eight hundred ninety-eight thousand, five".