993880379 has 2 divisors, whose sum is σ = 993880380. Its totient is φ = 993880378.

The previous prime is 993880357. The next prime is 993880399. The reversal of 993880379 is 973088399.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 993880379 - 2⁸ = 993880123 is a prime.

It is a super-2 number, since 2×993880379² = 1975596415522367282, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (993880399) 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, 496940189 + 496940190.

It is an arithmetic number, because the mean of its divisors is an integer number (496940190).

Almost surely, 2^993880379 is an apocalyptic number.

993880379 is a deficient number, since it is larger than the sum of its proper divisors (1).

993880379 is an equidigital number, since it uses as much as digits as its factorization.

993880379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The square root of 993880379 is about 31525.8684099265. The cubic root of 993880379 is about 997.9559510440.

The spelling of 993880379 in words is "nine hundred ninety-three million, eight hundred eighty thousand, three hundred seventy-nine".