79849501 has 2 divisors, whose sum is σ = 79849502. Its totient is φ = 79849500.

The previous prime is 79849463. The next prime is 79849507. The reversal of 79849501 is 10594897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60047001 + 19802500 = 7749^2 + 4450^2 .

It is an emirp because it is prime and its reverse (10594897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79849501 - 2⁷ = 79849373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79849507) 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 as a sum of consecutive naturals, namely, 39924750 + 39924751.

It is an arithmetic number, because the mean of its divisors is an integer number (39924751).

Almost surely, 2^79849501 is an apocalyptic number.

It is an amenable number.

79849501 is a deficient number, since it is larger than the sum of its proper divisors (1).

79849501 is an equidigital number, since it uses as much as digits as its factorization.

79849501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 79849501 is about 8935.8547996261. The cubic root of 79849501 is about 430.6165681701.

The spelling of 79849501 in words is "seventy-nine million, eight hundred forty-nine thousand, five hundred one".