79928450429 has 2 divisors, whose sum is σ = 79928450430. Its totient is φ = 79928450428.

The previous prime is 79928450389. The next prime is 79928450443. The reversal of 79928450429 is 92405482997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52198540900 + 27729909529 = 228470^2 + 166523^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79928450429 is a prime.

It is a super-2 number, since 2×79928450429² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79928450929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39964225214 + 39964225215.

It is an arithmetic number, because the mean of its divisors is an integer number (39964225215).

Almost surely, 2^79928450429 is an apocalyptic number.

It is an amenable number.

79928450429 is a deficient number, since it is larger than the sum of its proper divisors (1).

79928450429 is an equidigital number, since it uses as much as digits as its factorization.

79928450429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 79928450429 in words is "seventy-nine billion, nine hundred twenty-eight million, four hundred fifty thousand, four hundred twenty-nine".