424822861 has 4 divisors (see below), whose sum is σ = 424866172. Its totient is φ = 424779552.

The previous prime is 424822859. The next prime is 424822883. The reversal of 424822861 is 168228424.

It is the 8415-th star 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 2 ways, for example, as 163353961 + 261468900 = 12781^2 + 16170^2 .

It is a cyclic number.

It is not a de Polignac number, because 424822861 - 2¹ = 424822859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 424822861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424822831) 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, 865 + ... + 29161.

It is an arithmetic number, because the mean of its divisors is an integer number (106216543).

Almost surely, 2^424822861 is an apocalyptic number.

It is an amenable number.

424822861 is a deficient number, since it is larger than the sum of its proper divisors (43311).

424822861 is a wasteful number, since it uses less digits than its factorization.

424822861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43310.

The product of its digits is 49152, while the sum is 37.

The square root of 424822861 is about 20611.2314285197. The cubic root of 424822861 is about 751.7428275252.

The spelling of 424822861 in words is "four hundred twenty-four million, eight hundred twenty-two thousand, eight hundred sixty-one".