3949530 has 96 divisors (see below), whose sum is σ = 11067840. Its totient is φ = 898560.

The previous prime is 3949529. The next prime is 3949531. The reversal of 3949530 is 359493.

It is an interprime number because it is at equal distance from previous prime (3949529) and next prime (3949531).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3949491 and 3949500.

It is not an unprimeable number, because it can be changed into a prime (3949531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 96310 + ... + 96350.

It is an arithmetic number, because the mean of its divisors is an integer number (115290).

Almost surely, 2^3949530 is an apocalyptic number.

3949530 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 3949530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5533920).

3949530 is an abundant number, since it is smaller than the sum of its proper divisors (7118310).

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

3949530 is a wasteful number, since it uses less digits than its factorization.

3949530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 3949530 is about 1987.3424465854. The cubic root of 3949530 is about 158.0696429618.

The spelling of 3949530 in words is "three million, nine hundred forty-nine thousand, five hundred thirty".