73923973 has 8 divisors (see below), whose sum is σ = 78415128. Its totient is φ = 69448704.

The previous prime is 73923959. The next prime is 73923977. The reversal of 73923973 is 37932937.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4418404 + 69505569 = 2102^2 + 8337^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73923973 - 2¹³ = 73915781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73923977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6415 + ... + 13747.

It is an arithmetic number, because the mean of its divisors is an integer number (9801891).

Almost surely, 2^73923973 is an apocalyptic number.

It is an amenable number.

73923973 is a deficient number, since it is larger than the sum of its proper divisors (4491155).

73923973 is a wasteful number, since it uses less digits than its factorization.

73923973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7943.

The product of its digits is 214326, while the sum is 43.

The square root of 73923973 is about 8597.9051518379. The cubic root of 73923973 is about 419.6898182196.

The spelling of 73923973 in words is "seventy-three million, nine hundred twenty-three thousand, nine hundred seventy-three".