994597961 has 16 divisors (see below), whose sum is σ = 1143985920. Its totient is φ = 847056960.

The previous prime is 994597957. The next prime is 994597979. The reversal of 994597961 is 169795499.

It is a cyclic number.

It is not a de Polignac number, because 994597961 - 2² = 994597957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 994597961.

It is not an unprimeable number, because it can be changed into a prime (994597931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973631 + ... + 974651.

It is an arithmetic number, because the mean of its divisors is an integer number (71499120).

Almost surely, 2^994597961 is an apocalyptic number.

It is an amenable number.

994597961 is a deficient number, since it is larger than the sum of its proper divisors (149387959).

994597961 is a wasteful number, since it uses less digits than its factorization.

994597961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784.

The product of its digits is 5511240, while the sum is 59.

The square root of 994597961 is about 31537.2472007308. The cubic root of 994597961 is about 998.1960681199.

The spelling of 994597961 in words is "nine hundred ninety-four million, five hundred ninety-seven thousand, nine hundred sixty-one".