8454994491 has 16 divisors (see below), whose sum is σ = 11357634560. Its totient is φ = 5594572800.

The previous prime is 8454994463. The next prime is 8454994501. The reversal of 8454994491 is 1944994548.

It is a happy number.

It is not a de Polignac number, because 8454994491 - 2¹⁰ = 8454993467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8454994291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572091 + ... + 586683.

It is an arithmetic number, because the mean of its divisors is an integer number (709852160).

Almost surely, 2^8454994491 is an apocalyptic number.

8454994491 is a deficient number, since it is larger than the sum of its proper divisors (2902640069).

8454994491 is a wasteful number, since it uses less digits than its factorization.

8454994491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16026.

The product of its digits is 7464960, while the sum is 57.

The square root of 8454994491 is about 91951.0439908107. The cubic root of 8454994491 is about 2037.2192738355.

Adding to 8454994491 its sum of digits (57), we get a palindrome (8454994548).

The spelling of 8454994491 in words is "eight billion, four hundred fifty-four million, nine hundred ninety-four thousand, four hundred ninety-one".