79551489 has 4 divisors (see below), whose sum is σ = 106068656. Its totient is φ = 53034324.

The previous prime is 79551427. The next prime is 79551497. The reversal of 79551489 is 98415597.

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.

It is not a de Polignac number, because 79551489 - 2¹² = 79547393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79551289) 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, 13258579 + ... + 13258584.

It is an arithmetic number, because the mean of its divisors is an integer number (26517164).

Almost surely, 2^79551489 is an apocalyptic number.

It is an amenable number.

79551489 is a deficient number, since it is larger than the sum of its proper divisors (26517167).

79551489 is a wasteful number, since it uses less digits than its factorization.

79551489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26517166.

The product of its digits is 453600, while the sum is 48.

The square root of 79551489 is about 8919.1641424519. The cubic root of 79551489 is about 430.0801887587.

The spelling of 79551489 in words is "seventy-nine million, five hundred fifty-one thousand, four hundred eighty-nine".