993401 has 2 divisors, whose sum is σ = 993402. Its totient is φ = 993400.

The previous prime is 993397. The next prime is 993407. The reversal of 993401 is 104399.

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., 524176 + 469225 = 724^2 + 685^2 .

It is an emirp because it is prime and its reverse (104399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 993401 - 2² = 993397 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (993407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496700 + 496701.

It is an arithmetic number, because the mean of its divisors is an integer number (496701).

2⁹⁹³⁴⁰¹ is an apocalyptic number.

It is an amenable number.

993401 is a deficient number, since it is larger than the sum of its proper divisors (1).

993401 is an equidigital number, since it uses as much as digits as its factorization.

993401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 993401 is about 996.6950386151. The cubic root of 993401 is about 99.7795476983.

The spelling of 993401 in words is "nine hundred ninety-three thousand, four hundred one".