8897051990 has 16 divisors (see below), whose sum is σ = 16017281280. Its totient is φ = 3558245760.

The previous prime is 8897051959. The next prime is 8897051993. The reversal of 8897051990 is 991507988.

It is a happy number.

It is a super-2 number, since 2×8897051990² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8897051993) 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, 3830 + ... + 133449.

It is an arithmetic number, because the mean of its divisors is an integer number (1001080080).

Almost surely, 2^8897051990 is an apocalyptic number.

8897051990 is a deficient number, since it is larger than the sum of its proper divisors (7120229290).

8897051990 is a wasteful number, since it uses less digits than its factorization.

8897051990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143767.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The square root of 8897051990 is about 94324.1856047536. The cubic root of 8897051990 is about 2072.1222596163.

The spelling of 8897051990 in words is "eight billion, eight hundred ninety-seven million, fifty-one thousand, nine hundred ninety".