993684413 has 2 divisors, whose sum is σ = 993684414. Its totient is φ = 993684412.

The previous prime is 993684409. The next prime is 993684491. The reversal of 993684413 is 314486399.

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., 892037689 + 101646724 = 29867^2 + 10082^2 .

It is a cyclic number.

It is not a de Polignac number, because 993684413 - 2² = 993684409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993684403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496842206 + 496842207.

It is an arithmetic number, because the mean of its divisors is an integer number (496842207).

Almost surely, 2^993684413 is an apocalyptic number.

It is an amenable number.

993684413 is a deficient number, since it is larger than the sum of its proper divisors (1).

993684413 is an equidigital number, since it uses as much as digits as its factorization.

993684413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 47.

The square root of 993684413 is about 31522.7602376442. The cubic root of 993684413 is about 997.8903568689.

It can be divided in two parts, 9936 and 84413, that added together give a palindrome (94349).

The spelling of 993684413 in words is "nine hundred ninety-three million, six hundred eighty-four thousand, four hundred thirteen".