3949946550 has 144 divisors (see below), whose sum is σ = 11741034240. Its totient is φ = 943992000.

The previous prime is 3949946543. The next prime is 3949946557. The reversal of 3949946550 is 556499493.

3949946550 is a `hidden beast` number, since 3 + 9 + 49 + 9 + 46 + 550 = 666.

It is an interprime number because it is at equal distance from previous prime (3949946543) and next prime (3949946557).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949946557) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 345831 + ... + 357069.

It is an arithmetic number, because the mean of its divisors is an integer number (81534960).

Almost surely, 2^3949946550 is an apocalyptic number.

3949946550 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 3949946550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5870517120).

3949946550 is an abundant number, since it is smaller than the sum of its proper divisors (7791087690).

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

3949946550 is a wasteful number, since it uses less digits than its factorization.

3949946550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11339 (or 11331 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The square root of 3949946550 is about 62848.6002230758. The cubic root of 3949946550 is about 1580.7519987575.

The spelling of 3949946550 in words is "three billion, nine hundred forty-nine million, nine hundred forty-six thousand, five hundred fifty".