994693531 has 4 divisors (see below), whose sum is σ = 1071208432. Its totient is φ = 918178632.

The previous prime is 994693523. The next prime is 994693537. The reversal of 994693531 is 135396499.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 994693531 - 2³ = 994693523 is a prime.

It is a super-2 number, since 2×994693531² = 1978830441226495922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994693537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38257431 + ... + 38257456.

It is an arithmetic number, because the mean of its divisors is an integer number (267802108).

Almost surely, 2^994693531 is an apocalyptic number.

994693531 is a deficient number, since it is larger than the sum of its proper divisors (76514901).

994693531 is a wasteful number, since it uses less digits than its factorization.

994693531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76514900.

The product of its digits is 787320, while the sum is 49.

The square root of 994693531 is about 31538.7623568205. The cubic root of 994693531 is about 998.2280390088.

The spelling of 994693531 in words is "nine hundred ninety-four million, six hundred ninety-three thousand, five hundred thirty-one".