3985434 has 12 divisors (see below), whose sum is σ = 8635146. Its totient is φ = 1328472.

The previous prime is 3985433. The next prime is 3985451. The reversal of 3985434 is 4345893.

It can be written as a sum of positive squares in only one way, i.e., 3629025 + 356409 = 1905^2 + 597^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3985433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110689 + ... + 110724.

Almost surely, 2^3985434 is an apocalyptic number.

3985434 is an abundant number, since it is smaller than the sum of its proper divisors (4649712).

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

3985434 is a wasteful number, since it uses less digits than its factorization.

3985434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221421 (or 221418 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 3985434 is about 1996.3551788196. The cubic root of 3985434 is about 158.5471868052.

It can be divided in two parts, 398 and 5434, that added together give a cube (5832 = 18³).

The spelling of 3985434 in words is "three million, nine hundred eighty-five thousand, four hundred thirty-four".