79919754 has 16 divisors (see below), whose sum is σ = 169242048. Its totient is φ = 25072832.

The previous prime is 79919753. The next prime is 79919761. The reversal of 79919754 is 45791997.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 79919697 and 79919706.

It is not an unprimeable number, because it can be changed into a prime (79919753) 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 7 ways as a sum of consecutive naturals, for example, 391662 + ... + 391865.

It is an arithmetic number, because the mean of its divisors is an integer number (10577628).

Almost surely, 2^79919754 is an apocalyptic number.

79919754 is an abundant number, since it is smaller than the sum of its proper divisors (89322294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79919754 is a wasteful number, since it uses less digits than its factorization.

79919754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783549.

The product of its digits is 714420, while the sum is 51.

The square root of 79919754 is about 8939.7848967411. The cubic root of 79919754 is about 430.7428191698.

The spelling of 79919754 in words is "seventy-nine million, nine hundred nineteen thousand, seven hundred fifty-four".