2491059447 has 32 divisors (see below), whose sum is σ = 3796625600. Its totient is φ = 1613084544.

The previous prime is 2491059433. The next prime is 2491059457. The reversal of 2491059447 is 7449501942.

2491059447 is a `hidden beast` number, since 2 + 4 + 9 + 10 + 594 + 47 = 666.

It is not a de Polignac number, because 2491059447 - 2⁶ = 2491059383 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491059457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 706533 + ... + 710049.

It is an arithmetic number, because the mean of its divisors is an integer number (118644550).

Almost surely, 2^2491059447 is an apocalyptic number.

2491059447 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2491059447 is a deficient number, since it is larger than the sum of its proper divisors (1305566153).

2491059447 is a wasteful number, since it uses less digits than its factorization.

2491059447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272 (or 4266 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2491059447 is about 49910.5143932619. The cubic root of 2491059447 is about 1355.5889828377.

The spelling of 2491059447 in words is "two billion, four hundred ninety-one million, fifty-nine thousand, four hundred forty-seven".