79478563 has 2 divisors, whose sum is σ = 79478564. Its totient is φ = 79478562.

The previous prime is 79478543. The next prime is 79478573. The reversal of 79478563 is 36587497.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79478563 - 2⁹ = 79478051 is a prime.

It is not a weakly prime, because it can be changed into another prime (79478533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39739281 + 39739282.

It is an arithmetic number, because the mean of its divisors is an integer number (39739282).

Almost surely, 2^79478563 is an apocalyptic number.

79478563 is a deficient number, since it is larger than the sum of its proper divisors (1).

79478563 is an equidigital number, since it uses as much as digits as its factorization.

79478563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 49.

The square root of 79478563 is about 8915.0750417481. The cubic root of 79478563 is about 429.9487283378.

The spelling of 79478563 in words is "seventy-nine million, four hundred seventy-eight thousand, five hundred sixty-three".