73979329 has 2 divisors, whose sum is σ = 73979330. Its totient is φ = 73979328.

The previous prime is 73979327. The next prime is 73979341. The reversal of 73979329 is 92397937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55532304 + 18447025 = 7452^2 + 4295^2 .

It is an emirp because it is prime and its reverse (92397937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73979329 - 2¹ = 73979327 is a prime.

It is a super-2 number, since 2×73979329² = 10945882238580482, which contains 22 as substring.

Together with 73979327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (73979327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36989664 + 36989665.

It is an arithmetic number, because the mean of its divisors is an integer number (36989665).

Almost surely, 2^73979329 is an apocalyptic number.

It is an amenable number.

73979329 is a deficient number, since it is larger than the sum of its proper divisors (1).

73979329 is an equidigital number, since it uses as much as digits as its factorization.

73979329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 49.

The square root of 73979329 is about 8601.1237056561. The cubic root of 73979329 is about 419.7945499328.

The spelling of 73979329 in words is "seventy-three million, nine hundred seventy-nine thousand, three hundred twenty-nine".