79457269 has 4 divisors (see below), whose sum is σ = 84131244. Its totient is φ = 74783296.

The previous prime is 79457239. The next prime is 79457291. The reversal of 79457269 is 96275497.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59876644 + 19580625 = 7738^2 + 4425^2 .

It is a cyclic number.

It is not a de Polignac number, because 79457269 - 2⁷ = 79457141 is a prime.

It is a super-2 number, since 2×79457269² = 12626915193876722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79457239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2336962 + ... + 2336995.

It is an arithmetic number, because the mean of its divisors is an integer number (21032811).

Almost surely, 2^79457269 is an apocalyptic number.

It is an amenable number.

79457269 is a deficient number, since it is larger than the sum of its proper divisors (4673975).

79457269 is a wasteful number, since it uses less digits than its factorization.

79457269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673974.

The product of its digits is 952560, while the sum is 49.

The square root of 79457269 is about 8913.8806924930. The cubic root of 79457269 is about 429.9103274340.

The spelling of 79457269 in words is "seventy-nine million, four hundred fifty-seven thousand, two hundred sixty-nine".