1000001039 has 4 divisors (see below), whose sum is σ = 1012659360. Its totient is φ = 987342720.

The previous prime is 1000001021. The next prime is 1000001053. The reversal of 1000001039 is 9301000001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9301000001 = 241 ⋅38593361.

It is a cyclic number.

It is not a de Polignac number, because 1000001039 - 2²⁴ = 983223823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000001099) 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, 6329042 + ... + 6329199.

It is an arithmetic number, because the mean of its divisors is an integer number (253164840).

Almost surely, 2^1000001039 is an apocalyptic number.

1000001039 is a deficient number, since it is larger than the sum of its proper divisors (12658321).

1000001039 is an equidigital number, since it uses as much as digits as its factorization.

1000001039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12658320.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 1000001039 is about 31622.7930297120. The cubic root of 1000001039 is about 1000.0003463332. Note that the first 3 decimals are identical.

The spelling of 1000001039 in words is "one billion, one thousand, thirty-nine".