994892881 has 2 divisors, whose sum is σ = 994892882. Its totient is φ = 994892880.

The previous prime is 994892809. The next prime is 994892891. The reversal of 994892881 is 188298499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737611281 + 257281600 = 27159^2 + 16040^2 .

It is an emirp because it is prime and its reverse (188298499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 994892881 - 2⁷ = 994892753 is a prime.

It is a super-2 number, since 2×994892881² = 1979623689328960322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (994892891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497446440 + 497446441.

It is an arithmetic number, because the mean of its divisors is an integer number (497446441).

Almost surely, 2^994892881 is an apocalyptic number.

It is an amenable number.

994892881 is a deficient number, since it is larger than the sum of its proper divisors (1).

994892881 is an equidigital number, since it uses as much as digits as its factorization.

994892881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 58.

The square root of 994892881 is about 31541.9225951748. The cubic root of 994892881 is about 998.2947206754.

The spelling of 994892881 in words is "nine hundred ninety-four million, eight hundred ninety-two thousand, eight hundred eighty-one".