1021014089 has 4 divisors (see below), whose sum is σ = 1021519824. Its totient is φ = 1020508356.

The previous prime is 1021014073. The next prime is 1021014121. The reversal of 1021014089 is 9804101201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9804101201 = 229 ⋅42812669.

It is a cyclic number.

It is not a de Polignac number, because 1021014089 - 2⁴ = 1021014073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021014289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249827 + ... + 253880.

It is an arithmetic number, because the mean of its divisors is an integer number (255379956).

Almost surely, 2^1021014089 is an apocalyptic number.

It is an amenable number.

1021014089 is a deficient number, since it is larger than the sum of its proper divisors (505735).

1021014089 is an equidigital number, since it uses as much as digits as its factorization.

1021014089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505734.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1021014089 is about 31953.3110803873. The cubic root of 1021014089 is about 1006.9561954775.

The spelling of 1021014089 in words is "one billion, twenty-one million, fourteen thousand, eighty-nine".