2291446440 has 96 divisors (see below), whose sum is σ = 7453105920. Its totient is φ = 610568064.

The previous prime is 2291446373. The next prime is 2291446457. The reversal of 2291446440 is 446441922.

It is a happy number.

2291446440 is a `hidden beast` number, since 2 + 2 + 9 + 1 + 4 + 4 + 644 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2291446395 and 2291446404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 899809 + ... + 902351.

It is an arithmetic number, because the mean of its divisors is an integer number (77636520).

Almost surely, 2^2291446440 is an apocalyptic number.

2291446440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2291446440 is an abundant number, since it is smaller than the sum of its proper divisors (5161659480).

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

2291446440 is a wasteful number, since it uses less digits than its factorization.

2291446440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5063 (or 5056 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 2291446440 is about 47869.0551400380. The cubic root of 2291446440 is about 1318.3677483043.

The spelling of 2291446440 in words is "two billion, two hundred ninety-one million, four hundred forty-six thousand, four hundred forty".