779478 has 32 divisors (see below), whose sum is σ = 1814784. Its totient is φ = 218592.

The previous prime is 779477. The next prime is 779489. The reversal of 779478 is 874977.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2676 + ... + 2952.

It is an arithmetic number, because the mean of its divisors is an integer number (56712).

2⁷⁷⁹⁴⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 779478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (907392).

779478 is an abundant number, since it is smaller than the sum of its proper divisors (1035306).

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

779478 is a wasteful number, since it uses less digits than its factorization.

779478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its digits is 98784, while the sum is 42.

The square root of 779478 is about 882.8805128668. The cubic root of 779478 is about 92.0311016459.

The spelling of 779478 in words is "seven hundred seventy-nine thousand, four hundred seventy-eight".