877144993 has 4 divisors (see below), whose sum is σ = 877664788. Its totient is φ = 876625200.

The previous prime is 877144967. The next prime is 877145011. The reversal of 877144993 is 399441778.

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 256736529 + 620408464 = 16023^2 + 24908^2 .

It is a cyclic number.

It is not a de Polignac number, because 877144993 - 2¹³ = 877136801 is a prime.

It is a super-3 number, since 3×877144993³ (a number of 28 digits) contains 333 as substring.

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 877144993.

It is not an unprimeable number, because it can be changed into a prime (877144963) 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, 257358 + ... + 260743.

It is an arithmetic number, because the mean of its divisors is an integer number (219416197).

Almost surely, 2^877144993 is an apocalyptic number.

It is an amenable number.

877144993 is a deficient number, since it is larger than the sum of its proper divisors (519795).

877144993 is a wasteful number, since it uses less digits than its factorization.

877144993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519794.

The product of its digits is 1524096, while the sum is 52.

The square root of 877144993 is about 29616.6337216099. The cubic root of 877144993 is about 957.2465200807.

The spelling of 877144993 in words is "eight hundred seventy-seven million, one hundred forty-four thousand, nine hundred ninety-three".