79789450 has 24 divisors (see below), whose sum is σ = 159825708. Its totient is φ = 29460480.

The previous prime is 79789421. The next prime is 79789453. The reversal of 79789450 is 5498797.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 9078169 + 70711281 = 3013^2 + 8409^2 .

It is a junction number, because it is equal to n+sod(n) for n = 79789394 and 79789403.

It is not an unprimeable number, because it can be changed into a prime (79789453) 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 11 ways as a sum of consecutive naturals, for example, 60727 + ... + 62026.

Almost surely, 2^79789450 is an apocalyptic number.

79789450 is an abundant number, since it is smaller than the sum of its proper divisors (80036258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79789450 is a wasteful number, since it uses less digits than its factorization.

79789450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122778 (or 122773 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 79789450 is about 8932.4940526149. The cubic root of 79789450 is about 430.5085923725.

The spelling of 79789450 in words is "seventy-nine million, seven hundred eighty-nine thousand, four hundred fifty".