798777408 has 224 divisors, whose sum is σ = 2539837440. Its totient is φ = 218327040.

The previous prime is 798777391. The next prime is 798777431. The reversal of 798777408 is 804777897.

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, 1290123 + ... + 1290741.

It is an arithmetic number, because the mean of its divisors is an integer number (11338560).

Almost surely, 2^798777408 is an apocalyptic number.

798777408 is a gapful number since it is divisible by the number (78) 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 798777408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1269918720).

798777408 is an abundant number, since it is smaller than the sum of its proper divisors (1741060032).

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

798777408 is a wasteful number, since it uses less digits than its factorization.

798777408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 57.

The square root of 798777408 is about 28262.6504064994. The cubic root of 798777408 is about 927.8446281696.

The spelling of 798777408 in words is "seven hundred ninety-eight million, seven hundred seventy-seven thousand, four hundred eight".