3952638 has 28 divisors (see below), whose sum is σ = 8892648. Its totient is φ = 1317060.

The previous prime is 3952633. The next prime is 3952649. The reversal of 3952638 is 8362593.

3952638 is a `hidden beast` number, since 395 + 263 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3952633) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 103 + ... + 2813.

Almost surely, 2^3952638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3952638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4446324).

3952638 is an abundant number, since it is smaller than the sum of its proper divisors (4940010).

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

3952638 is an equidigital number, since it uses as much as digits as its factorization.

3952638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731 (or 2716 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 3952638 is about 1988.1242415906. The cubic root of 3952638 is about 158.1110952898. Note that the first 3 decimals are identical.

The spelling of 3952638 in words is "three million, nine hundred fifty-two thousand, six hundred thirty-eight".