994172429 has 2 divisors, whose sum is σ = 994172430. Its totient is φ = 994172428.

The previous prime is 994172407. The next prime is 994172467. The reversal of 994172429 is 924271499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 954192100 + 39980329 = 30890^2 + 6323^2 .

It is a cyclic number.

It is not a de Polignac number, because 994172429 - 2⁸ = 994172173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994172489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497086214 + 497086215.

It is an arithmetic number, because the mean of its divisors is an integer number (497086215).

Almost surely, 2^994172429 is an apocalyptic number.

It is an amenable number.

994172429 is a deficient number, since it is larger than the sum of its proper divisors (1).

994172429 is an equidigital number, since it uses as much as digits as its factorization.

994172429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 994172429 is about 31530.4999801779. The cubic root of 994172429 is about 998.0536906709.

The spelling of 994172429 in words is "nine hundred ninety-four million, one hundred seventy-two thousand, four hundred twenty-nine".