78898369 has 8 divisors (see below), whose sum is σ = 86750208. Its totient is φ = 71159760.

The previous prime is 78898361. The next prime is 78898373. The reversal of 78898369 is 96389887.

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 78898369 - 2³ = 78898361 is a prime.

It is a super-2 number, since 2×78898369² = 12449905261720322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78898361) 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, 26842 + ... + 29635.

It is an arithmetic number, because the mean of its divisors is an integer number (10843776).

Almost surely, 2^78898369 is an apocalyptic number.

It is an amenable number.

78898369 is a deficient number, since it is larger than the sum of its proper divisors (7851839).

78898369 is a wasteful number, since it uses less digits than its factorization.

78898369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56615.

The product of its digits is 5225472, while the sum is 58.

The square root of 78898369 is about 8882.4753869628. The cubic root of 78898369 is about 428.8999627282.

The spelling of 78898369 in words is "seventy-eight million, eight hundred ninety-eight thousand, three hundred sixty-nine".