3897800 has 24 divisors (see below), whose sum is σ = 9062850. Its totient is φ = 1559040.

The previous prime is 3897799. The next prime is 3897823. The reversal of 3897800 is 87983.

It can be written as a sum of positive squares in 3 ways, for example, as 1653796 + 2244004 = 1286^2 + 1498^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9545 + ... + 9944.

Almost surely, 2^3897800 is an apocalyptic number.

It is an amenable number.

3897800 is an abundant number, since it is smaller than the sum of its proper divisors (5165050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3897800 is a wasteful number, since it uses less digits than its factorization.

3897800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19505 (or 19496 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 3897800 is about 1974.2846805869. The cubic root of 3897800 is about 157.3764883694.

The spelling of 3897800 in words is "three million, eight hundred ninety-seven thousand, eight hundred".