1029639444 has 48 divisors (see below), whose sum is σ = 2477744640. Its totient is φ = 332627680.

The previous prime is 1029639409. The next prime is 1029639449. The reversal of 1029639444 is 4449369201.

It is a junction number, because it is equal to n+sod(n) for n = 1029639396 and 1029639405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1029639449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40027 + ... + 60509.

It is an arithmetic number, because the mean of its divisors is an integer number (51619680).

Almost surely, 2^1029639444 is an apocalyptic number.

It is an amenable number.

1029639444 is an abundant number, since it is smaller than the sum of its proper divisors (1448105196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1029639444 is a wasteful number, since it uses less digits than its factorization.

1029639444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20620 (or 20618 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 1029639444 is about 32087.9953253549. The cubic root of 1029639444 is about 1009.7837801374.

The spelling of 1029639444 in words is "one billion, twenty-nine million, six hundred thirty-nine thousand, four hundred forty-four".