406877 has 4 divisors (see below), whose sum is σ = 408156. Its totient is φ = 405600.

The previous prime is 406873. The next prime is 406883. The reversal of 406877 is 778604.

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 383161 + 23716 = 619^2 + 154^2 .

It is a cyclic number.

It is not a de Polignac number, because 406877 - 2² = 406873 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263 + ... + 939.

It is an arithmetic number, because the mean of its divisors is an integer number (102039).

2⁴⁰⁶⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

406877 is a deficient number, since it is larger than the sum of its proper divisors (1279).

406877 is an equidigital number, since it uses as much as digits as its factorization.

406877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 406877 is about 637.8691088303. The cubic root of 406877 is about 74.1004843820.

It can be divided in two parts, 4068 and 77, that multiplied together give a triangular number (313236 = T₇₉₁).

The spelling of 406877 in words is "four hundred six thousand, eight hundred seventy-seven".