3949277720850 has 1728 divisors, whose sum is σ = 14730137210880. Its totient is φ = 739715328000.

The previous prime is 3949277720849. The next prime is 3949277720851. The reversal of 3949277720850 is 580277729493.

3949277720850 is a `hidden beast` number, since 3 + 9 + 492 + 7 + 77 + 20 + 8 + 50 = 666.

It is an interprime number because it is at equal distance from previous prime (3949277720849) and next prime (3949277720851).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (3949277720851) by changing a digit.

It is a polite number, since it can be written in 863 ways as a sum of consecutive naturals, for example, 13955044809 + ... + 13955045091.

It is an arithmetic number, because the mean of its divisors is an integer number (8524384960).

Almost surely, 2^{3949277720850} is an apocalyptic number.

3949277720850 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 3949277720850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7365068605440).

3949277720850 is an abundant number, since it is smaller than the sum of its proper divisors (10780859490030).

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

3949277720850 is a wasteful number, since it uses less digits than its factorization.

3949277720850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 63.

The spelling of 3949277720850 in words is "three trillion, nine hundred forty-nine billion, two hundred seventy-seven million, seven hundred twenty thousand, eight hundred fifty".