809029629 has 12 divisors (see below), whose sum is σ = 1172760732. Its totient is φ = 537432000.

The previous prime is 809029619. The next prime is 809029657. The reversal of 809029629 is 926920908.

It can be written as a sum of positive squares in 2 ways, for example, as 714492900 + 94536729 = 26730^2 + 9723^2 .

It is not a de Polignac number, because 809029629 - 2¹² = 809025533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809029619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157422 + ... + 162479.

It is an arithmetic number, because the mean of its divisors is an integer number (97730061).

Almost surely, 2^809029629 is an apocalyptic number.

It is an amenable number.

809029629 is a deficient number, since it is larger than the sum of its proper divisors (363731103).

809029629 is a wasteful number, since it uses less digits than its factorization.

809029629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320188 (or 320185 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 809029629 is about 28443.4461519697. The cubic root of 809029629 is about 931.7973600378.

The spelling of 809029629 in words is "eight hundred nine million, twenty-nine thousand, six hundred twenty-nine".