1093029721 has 9 divisors (see below), whose sum is σ = 1271752821. Its totient is φ = 936684252.

The previous prime is 1093029719. The next prime is 1093029727. The reversal of 1093029721 is 1279203901.

It is a happy number.

The square root of 1093029721 is 33061.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1093029721 - 2¹ = 1093029719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1093029727) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 229066 + ... + 233788.

It is an arithmetic number, because the mean of its divisors is an integer number (141305869).

Almost surely, 2^1093029721 is an apocalyptic number.

1093029721 is the 33061-st square number.

1093029721 is the 16531-st centered octagonal number.

It is an amenable number.

1093029721 is a deficient number, since it is larger than the sum of its proper divisors (178723100).

1093029721 is an frugal number, since it uses more digits than its factorization.

1093029721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9460 (or 4730 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The cubic root of 1093029721 is about 1030.0951057435.

The spelling of 1093029721 in words is "one billion, ninety-three million, twenty-nine thousand, seven hundred twenty-one".