3948390 has 48 divisors (see below), whose sum is σ = 10810800. Its totient is φ = 997056.

The previous prime is 3948383. The next prime is 3948431. The reversal of 3948390 is 938493.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 556 + ... + 2864.

It is an arithmetic number, because the mean of its divisors is an integer number (225225).

Almost surely, 2^3948390 is an apocalyptic number.

3948390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3948390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5405400).

3948390 is an abundant number, since it is smaller than the sum of its proper divisors (6862410).

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

3948390 is a wasteful number, since it uses less digits than its factorization.

3948390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341 (or 2338 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 3948390 is about 1987.0556106964. The cubic root of 3948390 is about 158.0544329888.

The spelling of 3948390 in words is "three million, nine hundred forty-eight thousand, three hundred ninety".