79018249 has 4 divisors (see below), whose sum is σ = 80018560. Its totient is φ = 78017940.

The previous prime is 79018231. The next prime is 79018267. The reversal of 79018249 is 94281097.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94281097 = 19 ⋅4962163.

It is an interprime number because it is at equal distance from previous prime (79018231) and next prime (79018267).

It is a cyclic number.

It is not a de Polignac number, because 79018249 - 2¹⁵ = 78985481 is a prime.

It is a Duffinian number.

79018249 is a modest number, since divided by 18249 gives 79 as remainder.

It is not an unprimeable number, because it can be changed into a prime (79018229) 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 3 ways as a sum of consecutive naturals, for example, 500037 + ... + 500194.

It is an arithmetic number, because the mean of its divisors is an integer number (20004640).

Almost surely, 2^79018249 is an apocalyptic number.

79018249 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

79018249 is a deficient number, since it is larger than the sum of its proper divisors (1000311).

79018249 is a wasteful number, since it uses less digits than its factorization.

79018249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000310.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 79018249 is about 8889.2209444923. The cubic root of 79018249 is about 429.1170796302.

The spelling of 79018249 in words is "seventy-nine million, eighteen thousand, two hundred forty-nine".