79427237 has 2 divisors, whose sum is σ = 79427238. Its totient is φ = 79427236.

The previous prime is 79427233. The next prime is 79427251. The reversal of 79427237 is 73272497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79405921 + 21316 = 8911^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 79427237 - 2² = 79427233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79427194 and 79427203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79427233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39713618 + 39713619.

It is an arithmetic number, because the mean of its divisors is an integer number (39713619).

Almost surely, 2^79427237 is an apocalyptic number.

It is an amenable number.

79427237 is a deficient number, since it is larger than the sum of its proper divisors (1).

79427237 is an equidigital number, since it uses as much as digits as its factorization.

79427237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 41.

The square root of 79427237 is about 8912.1959695689. The cubic root of 79427237 is about 429.8561570432.

The spelling of 79427237 in words is "seventy-nine million, four hundred twenty-seven thousand, two hundred thirty-seven".