1994869429 has 12 divisors (see below), whose sum is σ = 2400583500. Its totient is φ = 1650925248.

The previous prime is 1994869427. The next prime is 1994869439. The reversal of 1994869429 is 9249684991.

It can be written as a sum of positive squares in 2 ways, for example, as 1584199204 + 410670225 = 39802^2 + 20265^2 .

It is not a de Polignac number, because 1994869429 - 2¹ = 1994869427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994869421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 700504 + ... + 703345.

It is an arithmetic number, because the mean of its divisors is an integer number (200048625).

Almost surely, 2^1994869429 is an apocalyptic number.

It is an amenable number.

1994869429 is a deficient number, since it is larger than the sum of its proper divisors (405714071).

1994869429 is a wasteful number, since it uses less digits than its factorization.

1994869429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403892 (or 1403885 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 61.

The square root of 1994869429 is about 44663.9611879645. The cubic root of 1994869429 is about 1258.8427749407.

The spelling of 1994869429 in words is "one billion, nine hundred ninety-four million, eight hundred sixty-nine thousand, four hundred twenty-nine".