1001028979 has 4 divisors (see below), whose sum is σ = 1001916760. Its totient is φ = 1000141200.

The previous prime is 1001028923. The next prime is 1001029009. The reversal of 1001028979 is 9798201001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001028979 - 2¹⁵ = 1000996211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001025979) 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, 442197 + ... + 444454.

It is an arithmetic number, because the mean of its divisors is an integer number (250479190).

Almost surely, 2^1001028979 is an apocalyptic number.

1001028979 is a deficient number, since it is larger than the sum of its proper divisors (887781).

1001028979 is an equidigital number, since it uses as much as digits as its factorization.

1001028979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887780.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 1001028979 is about 31639.0420050924. The cubic root of 1001028979 is about 1000.3428754230.

The spelling of 1001028979 in words is "one billion, one million, twenty-eight thousand, nine hundred seventy-nine".