994131747 has 18 divisors (see below), whose sum is σ = 1670412588. Its totient is φ = 568075032.

The previous prime is 994131727. The next prime is 994131773. The reversal of 994131747 is 747131499.

It is not a de Polignac number, because 994131747 - 2²⁶ = 927022883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (994131727) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1126693 + ... + 1127574.

Almost surely, 2^994131747 is an apocalyptic number.

994131747 is a deficient number, since it is larger than the sum of its proper divisors (676280841).

994131747 is a wasteful number, since it uses less digits than its factorization.

994131747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254287 (or 2254277 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 994131747 is about 31529.8548521873. The cubic root of 994131747 is about 998.0400768776.

The spelling of 994131747 in words is "nine hundred ninety-four million, one hundred thirty-one thousand, seven hundred forty-seven".