890534925869 has 4 divisors (see below), whose sum is σ = 890551644444. Its totient is φ = 890518207296.

The previous prime is 890534925857. The next prime is 890534925911. The reversal of 890534925869 is 968529435098.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 968529435098 = 2 ⋅484264717549.

It can be written as a sum of positive squares in 2 ways, for example, as 776451757225 + 114083168644 = 881165^2 + 337762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890534925869 is a prime.

It is a super-2 number, since 2×890534925869² (a number of 25 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 = 890534925799 and 890534925808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (890534928869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8279132 + ... + 8386005.

It is an arithmetic number, because the mean of its divisors is an integer number (222637911111).

Almost surely, 2^890534925869 is an apocalyptic number.

It is an amenable number.

890534925869 is a deficient number, since it is larger than the sum of its proper divisors (16718575).

890534925869 is a wasteful number, since it uses less digits than its factorization.

890534925869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16718574.

The product of its (nonzero) digits is 167961600, while the sum is 68.

The spelling of 890534925869 in words is "eight hundred ninety billion, five hundred thirty-four million, nine hundred twenty-five thousand, eight hundred sixty-nine".