993401473 has 2 divisors, whose sum is σ = 993401474. Its totient is φ = 993401472.

The previous prime is 993401471. The next prime is 993401501. The reversal of 993401473 is 374104399.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 984202384 + 9199089 = 31372^2 + 3033^2 .

It is a cyclic number.

It is not a de Polignac number, because 993401473 - 2¹ = 993401471 is a prime.

Together with 993401471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (993401471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496700736 + 496700737.

It is an arithmetic number, because the mean of its divisors is an integer number (496700737).

Almost surely, 2^993401473 is an apocalyptic number.

It is an amenable number.

993401473 is a deficient number, since it is larger than the sum of its proper divisors (1).

993401473 is an equidigital number, since it uses as much as digits as its factorization.

993401473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 993401473 is about 31518.2720497174. The cubic root of 993401473 is about 997.7956353470.

The spelling of 993401473 in words is "nine hundred ninety-three million, four hundred one thousand, four hundred seventy-three".