778048899 has 8 divisors (see below), whose sum is σ = 1082502912. Its totient is φ = 496147080.

The previous prime is 778048897. The next prime is 778048907. The reversal of 778048899 is 998840877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 778048899 - 2¹ = 778048897 is a prime.

It is a super-2 number, since 2×778048899² = 1210720178470224402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (778048891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5637967 + ... + 5638104.

It is an arithmetic number, because the mean of its divisors is an integer number (135312864).

Almost surely, 2^778048899 is an apocalyptic number.

778048899 is a deficient number, since it is larger than the sum of its proper divisors (304454013).

778048899 is a wasteful number, since it uses less digits than its factorization.

778048899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11276097.

The product of its (nonzero) digits is 8128512, while the sum is 60.

The square root of 778048899 is about 27893.5279052328. The cubic root of 778048899 is about 919.7482372695.

The spelling of 778048899 in words is "seven hundred seventy-eight million, forty-eight thousand, eight hundred ninety-nine".