4971399780 has 96 divisors (see below), whose sum is σ = 14797964160. Its totient is φ = 1243468800.

The previous prime is 4971399779. The next prime is 4971399833. The reversal of 4971399780 is 879931794.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 4971399780.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93552 + ... + 136728.

It is an arithmetic number, because the mean of its divisors is an integer number (154145460).

Almost surely, 2^4971399780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4971399780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7398982080).

4971399780 is an abundant number, since it is smaller than the sum of its proper divisors (9826564380).

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

4971399780 is a wasteful number, since it uses less digits than its factorization.

4971399780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43309 (or 43307 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 57.

The square root of 4971399780 is about 70508.1539965414. The cubic root of 4971399780 is about 1706.7093311241.

The spelling of 4971399780 in words is "four billion, nine hundred seventy-one million, three hundred ninety-nine thousand, seven hundred eighty".