73019939 has 2 divisors, whose sum is σ = 73019940. Its totient is φ = 73019938.

The previous prime is 73019909. The next prime is 73019953. The reversal of 73019939 is 93991037.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73019939 - 2²⁴ = 56242723 is a prime.

It is a super-2 number, since 2×73019939² = 10663822983127442, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 73019896 and 73019905.

It is not a weakly prime, because it can be changed into another prime (73019909) 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, 36509969 + 36509970.

It is an arithmetic number, because the mean of its divisors is an integer number (36509970).

Almost surely, 2^73019939 is an apocalyptic number.

73019939 is a deficient number, since it is larger than the sum of its proper divisors (1).

73019939 is an equidigital number, since it uses as much as digits as its factorization.

73019939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 73019939 is about 8545.1705073685. The cubic root of 73019939 is about 417.9719672447.

The spelling of 73019939 in words is "seventy-three million, nineteen thousand, nine hundred thirty-nine".