8997769040 has 80 divisors (see below), whose sum is σ = 22911033600. Its totient is φ = 3265921536.

The previous prime is 8997769037. The next prime is 8997769057. The reversal of 8997769040 is 409677998.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11960 + ... + 134679.

It is an arithmetic number, because the mean of its divisors is an integer number (286387920).

Almost surely, 2^8997769040 is an apocalyptic number.

8997769040 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 8997769040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11455516800).

8997769040 is an abundant number, since it is smaller than the sum of its proper divisors (13913264560).

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

8997769040 is a wasteful number, since it uses less digits than its factorization.

8997769040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146724 (or 146718 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 59.

The square root of 8997769040 is about 94856.5708846783. The cubic root of 8997769040 is about 2079.9119353741.

The spelling of 8997769040 in words is "eight billion, nine hundred ninety-seven million, seven hundred sixty-nine thousand, forty".