7000139861 has 32 divisors (see below), whose sum is σ = 9086370048. Its totient is φ = 5288279040.

The previous prime is 7000139843. The next prime is 7000139891. The reversal of 7000139861 is 1689310007.

It is not a de Polignac number, because 7000139861 - 2¹⁴ = 7000123477 is a prime.

It is a super-3 number, since 3×7000139861³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7000139801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6686 + ... + 118511.

It is an arithmetic number, because the mean of its divisors is an integer number (283949064).

Almost surely, 2^7000139861 is an apocalyptic number.

It is an amenable number.

7000139861 is a deficient number, since it is larger than the sum of its proper divisors (2086230187).

7000139861 is a wasteful number, since it uses less digits than its factorization.

7000139861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125261.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 7000139861 is about 83666.8384785752. The cubic root of 7000139861 is about 1912.9439229003.

Adding to 7000139861 its reverse (1689310007), we get a palindrome (8689449868).

The spelling of 7000139861 in words is "seven billion, one hundred thirty-nine thousand, eight hundred sixty-one".