73939133 has 2 divisors, whose sum is σ = 73939134. Its totient is φ = 73939132.

The previous prime is 73939109. The next prime is 73939147. The reversal of 73939133 is 33193937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42276004 + 31663129 = 6502^2 + 5627^2 .

73939133 is a truncatable prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73939133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73939163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36969566 + 36969567.

It is an arithmetic number, because the mean of its divisors is an integer number (36969567).

Almost surely, 2^73939133 is an apocalyptic number.

It is an amenable number.

73939133 is a deficient number, since it is larger than the sum of its proper divisors (1).

73939133 is an equidigital number, since it uses as much as digits as its factorization.

73939133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45927, while the sum is 38.

The square root of 73939133 is about 8598.7867167409. The cubic root of 73939133 is about 419.7185056332.

The spelling of 73939133 in words is "seventy-three million, nine hundred thirty-nine thousand, one hundred thirty-three".