73938881 has 2 divisors, whose sum is σ = 73938882. Its totient is φ = 73938880.

The previous prime is 73938871. The next prime is 73938883. The reversal of 73938881 is 18883937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38130625 + 35808256 = 6175^2 + 5984^2 .

It is a cyclic number.

It is not a de Polignac number, because 73938881 - 2⁶ = 73938817 is a prime.

It is a super-2 number, since 2×73938881² = 10933916247064322, which contains 22 as substring.

Together with 73938883, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 73938881 parts by 12160 straight cuts.

It is not a weakly prime, because it can be changed into another prime (73938883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36969440 + 36969441.

It is an arithmetic number, because the mean of its divisors is an integer number (36969441).

Almost surely, 2^73938881 is an apocalyptic number.

It is an amenable number.

73938881 is a deficient number, since it is larger than the sum of its proper divisors (1).

73938881 is an equidigital number, since it uses as much as digits as its factorization.

73938881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 73938881 is about 8598.7720634984. The cubic root of 73938881 is about 419.7180288032.

The spelling of 73938881 in words is "seventy-three million, nine hundred thirty-eight thousand, eight hundred eighty-one".