78998801 has 8 divisors (see below), whose sum is σ = 90445440. Its totient is φ = 67592448.

The previous prime is 78998771. The next prime is 78998809. The reversal of 78998801 is 10889987.

It is a happy number.

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

It is not a de Polignac number, because 78998801 - 2¹⁰ = 78997777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78998801.

It is not an unprimeable number, because it can be changed into a prime (78998809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5741 + ... + 13818.

It is an arithmetic number, because the mean of its divisors is an integer number (11305680).

Almost surely, 2^78998801 is an apocalyptic number.

It is an amenable number.

78998801 is a deficient number, since it is larger than the sum of its proper divisors (11446639).

78998801 is a wasteful number, since it uses less digits than its factorization.

78998801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20143.

The product of its (nonzero) digits is 290304, while the sum is 50.

The square root of 78998801 is about 8888.1269680400. The cubic root of 78998801 is about 429.0818719247.

The spelling of 78998801 in words is "seventy-eight million, nine hundred ninety-eight thousand, eight hundred one".