994887239 has 2 divisors, whose sum is σ = 994887240. Its totient is φ = 994887238.

The previous prime is 994887133. The next prime is 994887281. The reversal of 994887239 is 932788499.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-994887239 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994887739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497443619 + 497443620.

It is an arithmetic number, because the mean of its divisors is an integer number (497443620).

Almost surely, 2^994887239 is an apocalyptic number.

994887239 is a deficient number, since it is larger than the sum of its proper divisors (1).

994887239 is an equidigital number, since it uses as much as digits as its factorization.

994887239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 59.

The square root of 994887239 is about 31541.8331585214. The cubic root of 994887239 is about 998.2928335746.

The spelling of 994887239 in words is "nine hundred ninety-four million, eight hundred eighty-seven thousand, two hundred thirty-nine".