73479569 has 2 divisors, whose sum is σ = 73479570. Its totient is φ = 73479568.

The previous prime is 73479547. The next prime is 73479577. The reversal of 73479569 is 96597437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66259600 + 7219969 = 8140^2 + 2687^2 .

It is an emirp because it is prime and its reverse (96597437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73479569 - 2⁸ = 73479313 is a prime.

It is a super-2 number, since 2×73479569² = 10798494120851522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73479589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36739784 + 36739785.

It is an arithmetic number, because the mean of its divisors is an integer number (36739785).

Almost surely, 2^73479569 is an apocalyptic number.

It is an amenable number.

73479569 is a deficient number, since it is larger than the sum of its proper divisors (1).

73479569 is an equidigital number, since it uses as much as digits as its factorization.

73479569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1428840, while the sum is 50.

The square root of 73479569 is about 8572.0224568068. The cubic root of 73479569 is about 418.8471198511.

The spelling of 73479569 in words is "seventy-three million, four hundred seventy-nine thousand, five hundred sixty-nine".