890348877889 has 9 divisors (see below), whose sum is σ = 899175118179. Its totient is φ = 881608468560.

The previous prime is 890348877829. The next prime is 890348877961. The reversal of 890348877889 is 988778843098.

The square root of 890348877889 is 943583.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 296771084289 + 593577793600 = 544767^2 + 770440^2 .

It is not a de Polignac number, because 890348877889 - 2³⁵ = 855989139521 is a prime.

It is a super-2 number, since 2×890348877889² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (890348877809) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 97184469 + ... + 97193629.

Almost surely, 2^890348877889 is an apocalyptic number.

890348877889 is the 943583-rd square number.

890348877889 is the 471792-nd centered octagonal number.

It is an amenable number.

890348877889 is a deficient number, since it is larger than the sum of its proper divisors (8826240290).

890348877889 is an frugal number, since it uses more digits than its factorization.

890348877889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18528 (or 9264 counting only the distinct ones).

The product of its (nonzero) digits is 1560674304, while the sum is 79.

The spelling of 890348877889 in words is "eight hundred ninety billion, three hundred forty-eight million, eight hundred seventy-seven thousand, eight hundred eighty-nine".