8494269840 has 240 divisors, whose sum is σ = 34019751168. Its totient is φ = 1857106944.

The previous prime is 8494269821. The next prime is 8494269841. The reversal of 8494269840 is 489624948.

8494269840 is a `hidden beast` number, since 8 + 494 + 26 + 98 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×8494269840² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8494269841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79282 + ... + 152558.

Almost surely, 2^8494269840 is an apocalyptic number.

8494269840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8494269840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17009875584).

8494269840 is an abundant number, since it is smaller than the sum of its proper divisors (25525481328).

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

8494269840 is a wasteful number, since it uses less digits than its factorization.

8494269840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73326 (or 73317 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The square root of 8494269840 is about 92164.3631779659. The cubic root of 8494269840 is about 2040.3688491066.

The spelling of 8494269840 in words is "eight billion, four hundred ninety-four million, two hundred sixty-nine thousand, eight hundred forty".