79997853 has 16 divisors (see below), whose sum is σ = 116446400. Its totient is φ = 48553344.

The previous prime is 79997839. The next prime is 79997873. The reversal of 79997853 is 35879997.

It is not a de Polignac number, because 79997853 - 2¹³ = 79989661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79997793 and 79997802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79997833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11203 + ... + 16896.

It is an arithmetic number, because the mean of its divisors is an integer number (7277900).

Almost surely, 2^79997853 is an apocalyptic number.

79997853 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

79997853 is a deficient number, since it is larger than the sum of its proper divisors (36448547).

79997853 is a wasteful number, since it uses less digits than its factorization.

79997853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28188.

The product of its digits is 4286520, while the sum is 57.

The square root of 79997853 is about 8944.1518882452. The cubic root of 79997853 is about 430.8830833292.

The spelling of 79997853 in words is "seventy-nine million, nine hundred ninety-seven thousand, eight hundred fifty-three".