79495989 has 32 divisors (see below), whose sum is σ = 113097600. Its totient is φ = 49593600.

The previous prime is 79495987. The next prime is 79495991. The reversal of 79495989 is 98959497.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (79495987) and next prime (79495991).

It is not a de Polignac number, because 79495989 - 2¹ = 79495987 is a prime.

It is a super-2 number, since 2×79495989² = 12639224534176242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79495987) 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 31 ways as a sum of consecutive naturals, for example, 729267 + ... + 729375.

It is an arithmetic number, because the mean of its divisors is an integer number (3534300).

Almost surely, 2^79495989 is an apocalyptic number.

It is an amenable number.

79495989 is a deficient number, since it is larger than the sum of its proper divisors (33601611).

79495989 is a wasteful number, since it uses less digits than its factorization.

79495989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325.

The product of its digits is 7348320, while the sum is 60.

The square root of 79495989 is about 8916.0523215154. The cubic root of 79495989 is about 429.9801487140.

The spelling of 79495989 in words is "seventy-nine million, four hundred ninety-five thousand, nine hundred eighty-nine".