23887040428969 has 3 divisors (see below), whose sum is σ = 23887045316407. Its totient is φ = 23887035541532.

The previous prime is 23887040428949. The next prime is 23887040429053. The reversal of 23887040428969 is 96982404078832.

The square root of 23887040428969 is 4887437.

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., 15399070947225 + 8487969481744 = 3924165^2 + 2913412^2 .

It is not a de Polignac number, because 23887040428969 - 2³⁹ = 23337284615081 is a prime.

It is a super-2 number, since 2×23887040428969² (a number of 28 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 = 23887040428898 and 23887040428907.

It is not an unprimeable number, because it can be changed into a prime (23887040428949) 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, 2443719 + ... + 7331155.

Almost surely, 2^{23887040428969} is an apocalyptic number.

23887040428969 is the 4887437-th square number.

23887040428969 is the 2443719-th centered octagonal number.

It is an amenable number.

23887040428969 is a deficient number, since it is larger than the sum of its proper divisors (4887438).

23887040428969 is an frugal number, since it uses more digits than its factorization.

23887040428969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9774874 (or 4887437 counting only the distinct ones).

The product of its (nonzero) digits is 334430208, while the sum is 70.

The spelling of 23887040428969 in words is "twenty-three trillion, eight hundred eighty-seven billion, forty million, four hundred twenty-eight thousand, nine hundred sixty-nine".