79840500 has 192 divisors, whose sum is σ = 256628736. Its totient is φ = 19200000.

The previous prime is 79840493. The next prime is 79840507. The reversal of 79840500 is 504897.

It is an interprime number because it is at equal distance from previous prime (79840493) and next prime (79840507).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79840507) 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 63 ways as a sum of consecutive naturals, for example, 790450 + ... + 790550.

It is an arithmetic number, because the mean of its divisors is an integer number (1336608).

Almost surely, 2^79840500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79840500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128314368).

79840500 is an abundant number, since it is smaller than the sum of its proper divisors (176788236).

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

79840500 is a wasteful number, since it uses less digits than its factorization.

79840500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 79840500 is about 8935.3511402742. The cubic root of 79840500 is about 430.6003872075.

The spelling of 79840500 in words is "seventy-nine million, eight hundred forty thousand, five hundred".