877148939 has 4 divisors (see below), whose sum is σ = 883551624. Its totient is φ = 870746256.

The previous prime is 877148917. The next prime is 877148971. The reversal of 877148939 is 939841778.

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

It is a cyclic number.

It is not a de Polignac number, because 877148939 - 2¹² = 877144843 is a prime.

It is a super-2 number, since 2×877148939² = 1538780522377651442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (877148989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3201137 + ... + 3201410.

It is an arithmetic number, because the mean of its divisors is an integer number (220887906).

Almost surely, 2^877148939 is an apocalyptic number.

877148939 is a deficient number, since it is larger than the sum of its proper divisors (6402685).

877148939 is a wasteful number, since it uses less digits than its factorization.

877148939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402684.

The product of its digits is 3048192, while the sum is 56.

The square root of 877148939 is about 29616.7003395044. The cubic root of 877148939 is about 957.2479555291.

The spelling of 877148939 in words is "eight hundred seventy-seven million, one hundred forty-eight thousand, nine hundred thirty-nine".