798779749 has 4 divisors (see below), whose sum is σ = 810030240. Its totient is φ = 787529260.

The previous prime is 798779747. The next prime is 798779767. The reversal of 798779749 is 947977897.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 798779749 - 2¹ = 798779747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798779747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5625139 + ... + 5625280.

It is an arithmetic number, because the mean of its divisors is an integer number (202507560).

Almost surely, 2^798779749 is an apocalyptic number.

It is an amenable number.

798779749 is a deficient number, since it is larger than the sum of its proper divisors (11250491).

798779749 is a wasteful number, since it uses less digits than its factorization.

798779749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11250490.

The product of its digits is 56010528, while the sum is 67.

The square root of 798779749 is about 28262.6918215516. The cubic root of 798779749 is about 927.8455345891.

The spelling of 798779749 in words is "seven hundred ninety-eight million, seven hundred seventy-nine thousand, seven hundred forty-nine".