74379973 has 2 divisors, whose sum is σ = 74379974. Its totient is φ = 74379972.

The previous prime is 74379961. The next prime is 74379979. The reversal of 74379973 is 37997347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72982849 + 1397124 = 8543^2 + 1182^2 .

It is an emirp because it is prime and its reverse (37997347) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74379973 - 2⁵ = 74379941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74379979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37189986 + 37189987.

It is an arithmetic number, because the mean of its divisors is an integer number (37189987).

Almost surely, 2^74379973 is an apocalyptic number.

It is an amenable number.

74379973 is a deficient number, since it is larger than the sum of its proper divisors (1).

74379973 is an equidigital number, since it uses as much as digits as its factorization.

74379973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000188, while the sum is 49.

The square root of 74379973 is about 8624.3824706468. The cubic root of 74379973 is about 420.5510020646.

The spelling of 74379973 in words is "seventy-four million, three hundred seventy-nine thousand, nine hundred seventy-three".