994131597 has 4 divisors (see below), whose sum is σ = 1325508800. Its totient is φ = 662754396.

The previous prime is 994131581. The next prime is 994131643. The reversal of 994131597 is 795131499.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 795131499 = 3 ⋅265043833.

It is not a de Polignac number, because 994131597 - 2⁴ = 994131581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (994131517) 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, 165688597 + ... + 165688602.

It is an arithmetic number, because the mean of its divisors is an integer number (331377200).

Almost surely, 2^994131597 is an apocalyptic number.

It is an amenable number.

994131597 is a deficient number, since it is larger than the sum of its proper divisors (331377203).

994131597 is a wasteful number, since it uses less digits than its factorization.

994131597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331377202.

The product of its digits is 306180, while the sum is 48.

The square root of 994131597 is about 31529.8524734893. The cubic root of 994131597 is about 998.0400266810.

The spelling of 994131597 in words is "nine hundred ninety-four million, one hundred thirty-one thousand, five hundred ninety-seven".