408978 has 12 divisors (see below), whose sum is σ = 886158. Its totient is φ = 136320.

The previous prime is 408971. The next prime is 408979. The reversal of 408978 is 879804.

408978 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in only one way, i.e., 363609 + 45369 = 603^2 + 213^2 .

It is a zygodrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 408978.

It is not an unprimeable number, because it can be changed into a prime (408971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11343 + ... + 11378.

2⁴⁰⁸⁹⁷⁸ is an apocalyptic number.

408978 is an abundant number, since it is smaller than the sum of its proper divisors (477180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

408978 is a wasteful number, since it uses less digits than its factorization.

408978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22729 (or 22726 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 408978 is about 639.5138778791. The cubic root of 408978 is about 74.2278102587.

The spelling of 408978 in words is "four hundred eight thousand, nine hundred seventy-eight".