79461289 has 2 divisors, whose sum is σ = 79461290. Its totient is φ = 79461288.

The previous prime is 79461271. The next prime is 79461293. The reversal of 79461289 is 98216497.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75429225 + 4032064 = 8685^2 + 2008^2 .

It is a cyclic number.

It is not a de Polignac number, because 79461289 - 2²¹ = 77364137 is a prime.

It is a super-4 number, since 4×79461289⁴ (a number of 33 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (79461209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39730644 + 39730645.

It is an arithmetic number, because the mean of its divisors is an integer number (39730645).

Almost surely, 2^79461289 is an apocalyptic number.

It is an amenable number.

79461289 is a deficient number, since it is larger than the sum of its proper divisors (1).

79461289 is an equidigital number, since it uses as much as digits as its factorization.

79461289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 79461289 is about 8914.1061806555. The cubic root of 79461289 is about 429.9175774959.

The spelling of 79461289 in words is "seventy-nine million, four hundred sixty-one thousand, two hundred eighty-nine".