1029297989 has 8 divisors (see below), whose sum is σ = 1056998040. Its totient is φ = 1001721600.

The previous prime is 1029297967. The next prime is 1029298013. The reversal of 1029297989 is 9897929201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2608225 + 1026689764 = 1615^2 + 32042^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1029297989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1029297959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13922 + ... + 47459.

It is an arithmetic number, because the mean of its divisors is an integer number (132124755).

Almost surely, 2^1029297989 is an apocalyptic number.

It is an amenable number.

1029297989 is a deficient number, since it is larger than the sum of its proper divisors (27700051).

1029297989 is an equidigital number, since it uses as much as digits as its factorization.

1029297989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61831.

The product of its (nonzero) digits is 1469664, while the sum is 56.

The square root of 1029297989 is about 32082.6742806768. The cubic root of 1029297989 is about 1009.6721443462.

The spelling of 1029297989 in words is "one billion, twenty-nine million, two hundred ninety-seven thousand, nine hundred eighty-nine".