779481090 has 64 divisors (see below), whose sum is σ = 2098120320. Its totient is φ = 205911360.

The previous prime is 779481089. The next prime is 779481139. The reversal of 779481090 is 90184977.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15400 + ... + 42380.

It is an arithmetic number, because the mean of its divisors is an integer number (32783130).

Almost surely, 2^779481090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 779481090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1049060160).

779481090 is an abundant number, since it is smaller than the sum of its proper divisors (1318639230).

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

779481090 is a wasteful number, since it uses less digits than its factorization.

779481090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27104 (or 27098 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 779481090 is about 27919.1885627072. The cubic root of 779481090 is about 920.3122325533.

The spelling of 779481090 in words is "seven hundred seventy-nine million, four hundred eighty-one thousand, ninety".