79970550 has 96 divisors (see below), whose sum is σ = 229163904. Its totient is φ = 18240000.

The previous prime is 79970537. The next prime is 79970557. The reversal of 79970550 is 5507997.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79970557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26625 + ... + 29475.

It is an arithmetic number, because the mean of its divisors is an integer number (2387124).

Almost surely, 2^79970550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79970550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114581952).

79970550 is an abundant number, since it is smaller than the sum of its proper divisors (149193354).

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

79970550 is a wasteful number, since it uses less digits than its factorization.

79970550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894 (or 2889 counting only the distinct ones).

The product of its (nonzero) digits is 99225, while the sum is 42.

The square root of 79970550 is about 8942.6254534113. The cubic root of 79970550 is about 430.8340580990.

The spelling of 79970550 in words is "seventy-nine million, nine hundred seventy thousand, five hundred fifty".