885624989 has 4 divisors (see below), whose sum is σ = 886483356. Its totient is φ = 884766624.

The previous prime is 885624967. The next prime is 885625001. The reversal of 885624989 is 989426588.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 573219364 + 312405625 = 23942^2 + 17675^2 .

It is a cyclic number.

It is not a de Polignac number, because 885624989 - 2¹² = 885620893 is a prime.

It is a super-2 number, since 2×885624989² = 1568663242282500242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (885624919) 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, 427634 + ... + 429699.

It is an arithmetic number, because the mean of its divisors is an integer number (221620839).

Almost surely, 2^885624989 is an apocalyptic number.

It is an amenable number.

885624989 is a deficient number, since it is larger than the sum of its proper divisors (858367).

885624989 is a wasteful number, since it uses less digits than its factorization.

885624989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858366.

The product of its digits is 9953280, while the sum is 59.

The square root of 885624989 is about 29759.4520950907. The cubic root of 885624989 is about 960.3214306322.

The spelling of 885624989 in words is "eight hundred eighty-five million, six hundred twenty-four thousand, nine hundred eighty-nine".