79984258 has 4 divisors (see below), whose sum is σ = 119976390. Its totient is φ = 39992128.

The previous prime is 79984249. The next prime is 79984259. The reversal of 79984258 is 85248997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85248997 = 5501 ⋅15497.

It can be written as a sum of positive squares in only one way, i.e., 42810849 + 37173409 = 6543^2 + 6097^2 .

It is not an unprimeable number, because it can be changed into a prime (79984259) 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 as a sum of consecutive naturals, namely, 19996063 + ... + 19996066.

Almost surely, 2^79984258 is an apocalyptic number.

79984258 is a deficient number, since it is larger than the sum of its proper divisors (39992132).

79984258 is a wasteful number, since it uses less digits than its factorization.

79984258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39992131.

The product of its digits is 1451520, while the sum is 52.

The square root of 79984258 is about 8943.3918621516. The cubic root of 79984258 is about 430.8586735600.

The spelling of 79984258 in words is "seventy-nine million, nine hundred eighty-four thousand, two hundred fifty-eight".