78799619 has 8 divisors (see below), whose sum is σ = 79933392. Its totient is φ = 77670400.

The previous prime is 78799601. The next prime is 78799639. The reversal of 78799619 is 91699787.

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

It is a cyclic number.

It is not a de Polignac number, because 78799619 - 2⁸ = 78799363 is a prime.

It is a super-2 number, since 2×78799619² = 12418759909090322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78799639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48419 + ... + 50019.

It is an arithmetic number, because the mean of its divisors is an integer number (9991674).

Almost surely, 2^78799619 is an apocalyptic number.

78799619 is a deficient number, since it is larger than the sum of its proper divisors (1133773).

78799619 is a wasteful number, since it uses less digits than its factorization.

78799619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277.

The product of its digits is 1714608, while the sum is 56.

The square root of 78799619 is about 8876.9149483365. The cubic root of 78799619 is about 428.7209495060.

The spelling of 78799619 in words is "seventy-eight million, seven hundred ninety-nine thousand, six hundred nineteen".