879977 has 4 divisors (see below), whose sum is σ = 1005696. Its totient is φ = 754260.

The previous prime is 879973. The next prime is 879979. The reversal of 879977 is 779978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 779978 = 2 ⋅389989.

It is a cyclic number.

It is not a de Polignac number, because 879977 - 2² = 879973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (879973) 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, 62849 + ... + 62862.

It is an arithmetic number, because the mean of its divisors is an integer number (251424).

2⁸⁷⁹⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

879977 is a deficient number, since it is larger than the sum of its proper divisors (125719).

879977 is a wasteful number, since it uses less digits than its factorization.

879977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125718.

The product of its digits is 222264, while the sum is 47.

The square root of 879977 is about 938.0708928434. The cubic root of 879977 is about 95.8275622654.

Subtracting from 879977 its reverse (779978), we obtain a palindrome (99999).

The spelling of 879977 in words is "eight hundred seventy-nine thousand, nine hundred seventy-seven".