79894547 has 2 divisors, whose sum is σ = 79894548. Its totient is φ = 79894546.

The previous prime is 79894541. The next prime is 79894583. The reversal of 79894547 is 74549897.

It is a weak prime.

It is an emirp because it is prime and its reverse (74549897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79894547 - 2⁶ = 79894483 is a prime.

It is a super-3 number, since 3×79894547³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (79894541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39947273 + 39947274.

It is an arithmetic number, because the mean of its divisors is an integer number (39947274).

Almost surely, 2^79894547 is an apocalyptic number.

79894547 is a deficient number, since it is larger than the sum of its proper divisors (1).

79894547 is an equidigital number, since it uses as much as digits as its factorization.

79894547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 53.

The square root of 79894547 is about 8938.3749641643. The cubic root of 79894547 is about 430.6975284233.

The spelling of 79894547 in words is "seventy-nine million, eight hundred ninety-four thousand, five hundred forty-seven".