2211899440 has 40 divisors (see below), whose sum is σ = 5413336560. Its totient is φ = 838192896.

The previous prime is 2211899429. The next prime is 2211899441. The reversal of 2211899440 is 449981122.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2211899393 and 2211899402.

It is not an unprimeable number, because it can be changed into a prime (2211899441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726079 + ... + 729118.

It is an arithmetic number, because the mean of its divisors is an integer number (135333414).

Almost surely, 2^2211899440 is an apocalyptic number.

2211899440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211899440 is an abundant number, since it is smaller than the sum of its proper divisors (3201437120).

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

2211899440 is a wasteful number, since it uses less digits than its factorization.

2211899440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455229 (or 1455223 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 2211899440 is about 47030.8349915244. The cubic root of 2211899440 is about 1302.9321272284.

The spelling of 2211899440 in words is "two billion, two hundred eleven million, eight hundred ninety-nine thousand, four hundred forty".