994887133 has 2 divisors, whose sum is σ = 994887134. Its totient is φ = 994887132.

The previous prime is 994887097. The next prime is 994887239. The reversal of 994887133 is 331788499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830995929 + 163891204 = 28827^2 + 12802^2 .

It is a cyclic number.

It is not a de Polignac number, because 994887133 - 2²¹ = 992789981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994881133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497443566 + 497443567.

It is an arithmetic number, because the mean of its divisors is an integer number (497443567).

Almost surely, 2^994887133 is an apocalyptic number.

It is an amenable number.

994887133 is a deficient number, since it is larger than the sum of its proper divisors (1).

994887133 is an equidigital number, since it uses as much as digits as its factorization.

994887133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 994887133 is about 31541.8314782132. The cubic root of 994887133 is about 998.2927981203.

The spelling of 994887133 in words is "nine hundred ninety-four million, eight hundred eighty-seven thousand, one hundred thirty-three".