7894139289 has 8 divisors (see below), whose sum is σ = 10703917920. Its totient is φ = 5173560096.

The previous prime is 7894139233. The next prime is 7894139293. The reversal of 7894139289 is 9829314987.

7894139289 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7894139289 - 2⁷ = 7894139161 is a prime.

It is a super-2 number, since 2×7894139289² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7894139689) 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, 22299652 + ... + 22300005.

It is an arithmetic number, because the mean of its divisors is an integer number (1337989740).

Almost surely, 2^7894139289 is an apocalyptic number.

It is an amenable number.

7894139289 is a deficient number, since it is larger than the sum of its proper divisors (2809778631).

7894139289 is a wasteful number, since it uses less digits than its factorization.

7894139289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44599719.

The product of its digits is 7838208, while the sum is 60.

The square root of 7894139289 is about 88848.9689810748. The cubic root of 7894139289 is about 1991.1390740561.

The spelling of 7894139289 in words is "seven billion, eight hundred ninety-four million, one hundred thirty-nine thousand, two hundred eighty-nine".