3139402809 has 8 divisors (see below), whose sum is σ = 4187725920. Its totient is φ = 2092007456.

The previous prime is 3139402807. The next prime is 3139402837. The reversal of 3139402809 is 9082049313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3139402809 - 2¹ = 3139402807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3139402807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224004 + ... + 237605.

It is an arithmetic number, because the mean of its divisors is an integer number (523465740).

Almost surely, 2^3139402809 is an apocalyptic number.

It is an amenable number.

3139402809 is a deficient number, since it is larger than the sum of its proper divisors (1048323111).

3139402809 is a wasteful number, since it uses less digits than its factorization.

3139402809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463879.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 3139402809 is about 56030.3739859016. The cubic root of 3139402809 is about 1464.2515109371.

The spelling of 3139402809 in words is "three billion, one hundred thirty-nine million, four hundred two thousand, eight hundred nine".