79920001 has 8 divisors (see below), whose sum is σ = 91402560. Its totient is φ = 68453808.

The previous prime is 79919989. The next prime is 79920019. The reversal of 79920001 is 10002997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79920001 - 2¹¹ = 79917953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79920091) 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, 9315 + ... + 15703.

It is an arithmetic number, because the mean of its divisors is an integer number (11425320).

Almost surely, 2^79920001 is an apocalyptic number.

It is an amenable number.

79920001 is a deficient number, since it is larger than the sum of its proper divisors (11482559).

79920001 is a wasteful number, since it uses less digits than its factorization.

79920001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8183.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 79920001 is about 8939.7987113805. The cubic root of 79920001 is about 430.7432629207.

Adding to 79920001 its reverse (10002997), we get a palindrome (89922998).

The spelling of 79920001 in words is "seventy-nine million, nine hundred twenty thousand, one".