3899620 has 12 divisors (see below), whose sum is σ = 8189244. Its totient is φ = 1559840.

The previous prime is 3899611. The next prime is 3899639. The reversal of 3899620 is 269983.

It can be written as a sum of positive squares in 2 ways, for example, as 996004 + 2903616 = 998^2 + 1704^2 .

It is a super-2 number, since 2×3899620² = 30414072288800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3899620.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97471 + ... + 97510.

It is an arithmetic number, because the mean of its divisors is an integer number (682437).

Almost surely, 2^3899620 is an apocalyptic number.

It is an amenable number.

3899620 is an abundant number, since it is smaller than the sum of its proper divisors (4289624).

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

3899620 is a wasteful number, since it uses less digits than its factorization.

3899620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194990 (or 194988 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 3899620 is about 1974.7455532296. The cubic root of 3899620 is about 157.4009791625.

The spelling of 3899620 in words is "three million, eight hundred ninety-nine thousand, six hundred twenty".