30489699769 has 3 divisors (see below), whose sum is σ = 30489874383. Its totient is φ = 30489525156.

The previous prime is 30489699749. The next prime is 30489699787. The reversal of 30489699769 is 96799698403.

The square root of 30489699769 is 174613.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 18032461225 + 12457238544 = 134285^2 + 111612^2 .

It is not a de Polignac number, because 30489699769 - 2⁷ = 30489699641 is a prime.

It is a super-2 number, since 2×30489699769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30489699698 and 30489699707.

It is not an unprimeable number, because it can be changed into a prime (30489699749) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 87307 + ... + 261919.

It is an arithmetic number, because the mean of its divisors is an integer number (10163291461).

Almost surely, 2^30489699769 is an apocalyptic number.

30489699769 is the 174613-rd square number.

30489699769 is the 87307-th centered octagonal number.

It is an amenable number.

30489699769 is a deficient number, since it is larger than the sum of its proper divisors (174614).

30489699769 is an frugal number, since it uses more digits than its factorization.

30489699769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349226 (or 174613 counting only the distinct ones).

The product of its (nonzero) digits is 158723712, while the sum is 70.

The spelling of 30489699769 in words is "thirty billion, four hundred eighty-nine million, six hundred ninety-nine thousand, seven hundred sixty-nine".