994395531 has 4 divisors (see below), whose sum is σ = 1325860712. Its totient is φ = 662930352.

The previous prime is 994395517. The next prime is 994395553. The reversal of 994395531 is 135593499.

994395531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 994395531 - 2¹⁵ = 994362763 is a prime.

It is a super-2 number, since 2×994395531² = 1977644944145543922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994395431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165732586 + ... + 165732591.

It is an arithmetic number, because the mean of its divisors is an integer number (331465178).

Almost surely, 2^994395531 is an apocalyptic number.

994395531 is a deficient number, since it is larger than the sum of its proper divisors (331465181).

994395531 is a wasteful number, since it uses less digits than its factorization.

994395531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331465180.

The product of its digits is 656100, while the sum is 48.

The square root of 994395531 is about 31534.0376577437. The cubic root of 994395531 is about 998.1283427513.

The spelling of 994395531 in words is "nine hundred ninety-four million, three hundred ninety-five thousand, five hundred thirty-one".