993487601 has 2 divisors, whose sum is σ = 993487602. Its totient is φ = 993487600.

The previous prime is 993487589. The next prime is 993487603. The reversal of 993487601 is 106784399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 922944400 + 70543201 = 30380^2 + 8399^2 .

It is a cyclic number.

It is not a de Polignac number, because 993487601 - 2²⁶ = 926378737 is a prime.

It is a super-2 number, since 2×993487601² = 1974035226681470402, which contains 22 as substring.

Together with 993487603, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 993487601 parts by 44575 straight cuts.

It is not a weakly prime, because it can be changed into another prime (993487603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496743800 + 496743801.

It is an arithmetic number, because the mean of its divisors is an integer number (496743801).

Almost surely, 2^993487601 is an apocalyptic number.

It is an amenable number.

993487601 is a deficient number, since it is larger than the sum of its proper divisors (1).

993487601 is an equidigital number, since it uses as much as digits as its factorization.

993487601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 993487601 is about 31519.6383386612. The cubic root of 993487601 is about 997.8244708384.

The spelling of 993487601 in words is "nine hundred ninety-three million, four hundred eighty-seven thousand, six hundred one".