2491440379 has 8 divisors (see below), whose sum is σ = 2639276240. Its totient is φ = 2345275296.

The previous prime is 2491440361. The next prime is 2491440403. The reversal of 2491440379 is 9730441942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2491440379 - 2¹¹ = 2491438331 is a prime.

It is a super-2 number, since 2×2491440379² = 12414550324223327282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491440349) 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, 414624 + ... + 420589.

It is an arithmetic number, because the mean of its divisors is an integer number (329909530).

Almost surely, 2^2491440379 is an apocalyptic number.

2491440379 is a deficient number, since it is larger than the sum of its proper divisors (147835861).

2491440379 is a wasteful number, since it uses less digits than its factorization.

2491440379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835389.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 2491440379 is about 49914.3303971915. The cubic root of 2491440379 is about 1355.6580780579.

The spelling of 2491440379 in words is "two billion, four hundred ninety-one million, four hundred forty thousand, three hundred seventy-nine".