993434077 has 2 divisors, whose sum is σ = 993434078. Its totient is φ = 993434076.

The previous prime is 993434051. The next prime is 993434087. The reversal of 993434077 is 770434399.

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., 935992836 + 57441241 = 30594^2 + 7579^2 .

It is a cyclic number.

It is not a de Polignac number, because 993434077 - 2⁷ = 993433949 is a prime.

It is a super-2 number, since 2×993434077² = 1973822530689683858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993434017) 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, 496717038 + 496717039.

It is an arithmetic number, because the mean of its divisors is an integer number (496717039).

Almost surely, 2^993434077 is an apocalyptic number.

It is an amenable number.

993434077 is a deficient number, since it is larger than the sum of its proper divisors (1).

993434077 is an equidigital number, since it uses as much as digits as its factorization.

993434077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 571536, while the sum is 46.

The square root of 993434077 is about 31518.7892692597. The cubic root of 993434077 is about 997.8065513005.

The spelling of 993434077 in words is "nine hundred ninety-three million, four hundred thirty-four thousand, seventy-seven".