79769413 has 2 divisors, whose sum is σ = 79769414. Its totient is φ = 79769412.

The previous prime is 79769411. The next prime is 79769419. The reversal of 79769413 is 31496797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72624484 + 7144929 = 8522^2 + 2673^2 .

It is a cyclic number.

It is not a de Polignac number, because 79769413 - 2¹ = 79769411 is a prime.

Together with 79769411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79769411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39884706 + 39884707.

It is an arithmetic number, because the mean of its divisors is an integer number (39884707).

Almost surely, 2^79769413 is an apocalyptic number.

It is an amenable number.

79769413 is a deficient number, since it is larger than the sum of its proper divisors (1).

79769413 is an equidigital number, since it uses as much as digits as its factorization.

79769413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 46.

The square root of 79769413 is about 8931.3724029401. The cubic root of 79769413 is about 430.4725524247.

The spelling of 79769413 in words is "seventy-nine million, seven hundred sixty-nine thousand, four hundred thirteen".