79423247 has 2 divisors, whose sum is σ = 79423248. Its totient is φ = 79423246.

The previous prime is 79423231. The next prime is 79423291. The reversal of 79423247 is 74232497.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79423247 - 2⁴ = 79423231 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79423247.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79323247) 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, 39711623 + 39711624.

It is an arithmetic number, because the mean of its divisors is an integer number (39711624).

Almost surely, 2^79423247 is an apocalyptic number.

79423247 is a deficient number, since it is larger than the sum of its proper divisors (1).

79423247 is an equidigital number, since it uses as much as digits as its factorization.

79423247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 38.

The square root of 79423247 is about 8911.9721162041. The cubic root of 79423247 is about 429.8489590305.

The spelling of 79423247 in words is "seventy-nine million, four hundred twenty-three thousand, two hundred forty-seven".