79151489 has 2 divisors, whose sum is σ = 79151490. Its totient is φ = 79151488.

The previous prime is 79151467. The next prime is 79151521. The reversal of 79151489 is 98415197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51955264 + 27196225 = 7208^2 + 5215^2 .

It is a cyclic number.

It is not a de Polignac number, because 79151489 - 2¹⁶ = 79085953 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79151459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39575744 + 39575745.

It is an arithmetic number, because the mean of its divisors is an integer number (39575745).

Almost surely, 2^79151489 is an apocalyptic number.

It is an amenable number.

79151489 is a deficient number, since it is larger than the sum of its proper divisors (1).

79151489 is an equidigital number, since it uses as much as digits as its factorization.

79151489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 44.

The square root of 79151489 is about 8896.7122579074. The cubic root of 79151489 is about 429.3581355641.

The spelling of 79151489 in words is "seventy-nine million, one hundred fifty-one thousand, four hundred eighty-nine".