2179379400 has 192 divisors, whose sum is σ = 7433899200. Its totient is φ = 528140800.

The previous prime is 2179379387. The next prime is 2179379407. The reversal of 2179379400 is 49739712.

It is not an unprimeable number, because it can be changed into a prime (2179379407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 797236 + ... + 799964.

It is an arithmetic number, because the mean of its divisors is an integer number (38718225).

Almost surely, 2^2179379400 is an apocalyptic number.

2179379400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2179379400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3716949600).

2179379400 is an abundant number, since it is smaller than the sum of its proper divisors (5254519800).

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

2179379400 is a wasteful number, since it uses less digits than its factorization.

2179379400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781 (or 2750 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 2179379400 is about 46683.8237508454. The cubic root of 2179379400 is about 1296.5152034460.

The spelling of 2179379400 in words is "two billion, one hundred seventy-nine million, three hundred seventy-nine thousand, four hundred".