79726987 has 2 divisors, whose sum is σ = 79726988. Its totient is φ = 79726986.

The previous prime is 79726981. The next prime is 79727051. The reversal of 79726987 is 78962797.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79726987 - 2¹⁹ = 79202699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (79726981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39863493 + 39863494.

It is an arithmetic number, because the mean of its divisors is an integer number (39863494).

Almost surely, 2^79726987 is an apocalyptic number.

79726987 is a deficient number, since it is larger than the sum of its proper divisors (1).

79726987 is an equidigital number, since it uses as much as digits as its factorization.

79726987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 55.

The square root of 79726987 is about 8928.9969761446. The cubic root of 79726987 is about 430.3962221347.

The spelling of 79726987 in words is "seventy-nine million, seven hundred twenty-six thousand, nine hundred eighty-seven".