1002739409 has 16 divisors (see below), whose sum is σ = 1187347200. Its totient is φ = 828563904.

The previous prime is 1002739391. The next prime is 1002739417. The reversal of 1002739409 is 9049372001.

It is a de Polignac number, because none of the positive numbers 2^k-1002739409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002799409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140444 + ... + 147410.

It is an arithmetic number, because the mean of its divisors is an integer number (74209200).

Almost surely, 2^1002739409 is an apocalyptic number.

It is an amenable number.

1002739409 is a deficient number, since it is larger than the sum of its proper divisors (184607791).

1002739409 is an equidigital number, since it uses as much as digits as its factorization.

1002739409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7712.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1002739409 is about 31666.0608380645. The cubic root of 1002739409 is about 1000.9123037820.

The spelling of 1002739409 in words is "one billion, two million, seven hundred thirty-nine thousand, four hundred nine".