994289957 has 2 divisors, whose sum is σ = 994289958. Its totient is φ = 994289956.

The previous prime is 994289953. The next prime is 994290013. The reversal of 994289957 is 759982499.

994289957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 901860961 + 92428996 = 30031^2 + 9614^2 .

It is a cyclic number.

It is not a de Polignac number, because 994289957 - 2² = 994289953 is a prime.

It is a super-2 number, since 2×994289957² = 1977225037182123698, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 994289957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994289953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497144978 + 497144979.

It is an arithmetic number, because the mean of its divisors is an integer number (497144979).

Almost surely, 2^994289957 is an apocalyptic number.

It is an amenable number.

994289957 is a deficient number, since it is larger than the sum of its proper divisors (1).

994289957 is an equidigital number, since it uses as much as digits as its factorization.

994289957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 62.

The square root of 994289957 is about 31532.3636443575. The cubic root of 994289957 is about 998.0930180649.

It can be divided in two parts, 9942 and 89957, that added together give a palindrome (99899).

The spelling of 994289957 in words is "nine hundred ninety-four million, two hundred eighty-nine thousand, nine hundred fifty-seven".