779478000 has 320 divisors, whose sum is σ = 2925431808. Its totient is φ = 174873600.

The previous prime is 779477971. The next prime is 779478031. The reversal of 779478000 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 an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2813862 + ... + 2814138.

Almost surely, 2^779478000 is an apocalyptic number.

779478000 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 779478000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1462715904).

779478000 is an abundant number, since it is smaller than the sum of its proper divisors (2145953808).

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

779478000 is a wasteful number, since it uses less digits than its factorization.

779478000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 361 counting only the distinct ones).

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

The square root of 779478000 is about 27919.1332243678. The cubic root of 779478000 is about 920.3110164586.

The spelling of 779478000 in words is "seven hundred seventy-nine million, four hundred seventy-eight thousand".