73421477 has 2 divisors, whose sum is σ = 73421478. Its totient is φ = 73421476.

The previous prime is 73421471. The next prime is 73421479. The reversal of 73421477 is 77412437.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 28718881 = 6686^2 + 5359^2 .

It is a cyclic number.

It is not a de Polignac number, because 73421477 - 2⁴ = 73421461 is a prime.

Together with 73421479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73421471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36710738 + 36710739.

It is an arithmetic number, because the mean of its divisors is an integer number (36710739).

Almost surely, 2^73421477 is an apocalyptic number.

It is an amenable number.

73421477 is a deficient number, since it is larger than the sum of its proper divisors (1).

73421477 is an equidigital number, since it uses as much as digits as its factorization.

73421477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32928, while the sum is 35.

The square root of 73421477 is about 8568.6333215980. The cubic root of 73421477 is about 418.7367123726.

The spelling of 73421477 in words is "seventy-three million, four hundred twenty-one thousand, four hundred seventy-seven".