79389469 has 2 divisors, whose sum is σ = 79389470. Its totient is φ = 79389468.

The previous prime is 79389463. The next prime is 79389503. The reversal of 79389469 is 96498397.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79388100 + 1369 = 8910^2 + 37^2 .

It is a cyclic number.

It is not a de Polignac number, because 79389469 - 2³ = 79389461 is a prime.

It is a super-2 number, since 2×79389469² = 12605375576203922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79389461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39694734 + 39694735.

It is an arithmetic number, because the mean of its divisors is an integer number (39694735).

Almost surely, 2^79389469 is an apocalyptic number.

It is an amenable number.

79389469 is a deficient number, since it is larger than the sum of its proper divisors (1).

79389469 is an equidigital number, since it uses as much as digits as its factorization.

79389469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The square root of 79389469 is about 8910.0768234623. The cubic root of 79389469 is about 429.7880134110.

The spelling of 79389469 in words is "seventy-nine million, three hundred eighty-nine thousand, four hundred sixty-nine".